Finding the Fourth Proportional to 134,568,312.42, 185,704,345.89 and 72,688,651.50

Step by Step Solution

1. Step 1: Write the proportion equation
   134,568,312.42 : 185,704,345.89 = 72,688,651.50 : x
2. Step 2: Convert to fraction form
   134,568,312.42/185,704,345.89 = 72,688,651.50/x
3. Step 3: Cross multiply
   134,568,312.42x = 185,704,345.89 × 72,688,651.50
4. Step 4: Simplify right side
   134,568,312.42x = 13,498,598,480,433,666
5. Step 5: Solve for x
   x = 13,498,598,480,433,666/134,568,312.42
6. Step 6: Final answer
   x = 100,310,379.45