Finding the Fourth Proportional to 128,730,061.60, 192,945,793.20 and 52,002,714.40

Step by Step Solution

1. Step 1: Write the proportion equation
   128,730,061.60 : 192,945,793.20 = 52,002,714.40 : x
2. Step 2: Convert to fraction form
   128,730,061.60/192,945,793.20 = 52,002,714.40/x
3. Step 3: Cross multiply
   128,730,061.60x = 192,945,793.20 × 52,002,714.40
4. Step 4: Simplify right side
   128,730,061.60x = 10,033,704,978,461,062
5. Step 5: Solve for x
   x = 10,033,704,978,461,062/128,730,061.60
6. Step 6: Final answer
   x = 77,943,759.63