Finding the Fourth Proportional to 103,406.42, 155,061.18 and 43,422.08

Step by Step Solution

1. Step 1: Write the proportion equation
   103,406.42 : 155,061.18 = 43,422.08 : x
2. Step 2: Convert to fraction form
   103,406.42/155,061.18 = 43,422.08/x
3. Step 3: Cross multiply
   103,406.42x = 155,061.18 × 43,422.08
4. Step 4: Simplify right side
   103,406.42x = 6,733,078,962.85
5. Step 5: Solve for x
   x = 6,733,078,962.85/103,406.42
6. Step 6: Final answer
   x = 65,112.78