Finding the Fourth Proportional to 78,803, 118,204.22 and 19,638.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,803 : 118,204.22 = 19,638.72 : x
2. Step 2: Convert to fraction form
   78,803/118,204.22 = 19,638.72/x
3. Step 3: Cross multiply
   78,803x = 118,204.22 × 19,638.72
4. Step 4: Simplify right side
   78,803x = 2,321,379,579.40
5. Step 5: Solve for x
   x = 2,321,379,579.40/78,803
6. Step 6: Final answer
   x = 29,458.01