Finding the Fourth Proportional to 698,156,670,782.56, 963,479,977,818.72 and 405,158,908,706.36

Step by Step Solution

1. Step 1: Write the proportion equation
   698,156,670,782.56 : 963,479,977,818.72 = 405,158,908,706.36 : x
2. Step 2: Convert to fraction form
   698,156,670,782.56/963,479,977,818.72 = 405,158,908,706.36/x
3. Step 3: Cross multiply
   698,156,670,782.56x = 963,479,977,818.72 × 405,158,908,706.36
4. Step 4: Simplify right side
   698,156,670,782.56x = 390,362,496,373,460,496,809,984
5. Step 5: Solve for x
   x = 390,362,496,373,460,496,809,984/698,156,670,782.56
6. Step 6: Final answer
   x = 559,133,089,619.99