Finding the Fourth Proportional to 72,024,134.30, 99,393,310.19 and 39,429,086.30

Step by Step Solution

1. Step 1: Write the proportion equation
   72,024,134.30 : 99,393,310.19 = 39,429,086.30 : x
2. Step 2: Convert to fraction form
   72,024,134.30/99,393,310.19 = 39,429,086.30/x
3. Step 3: Cross multiply
   72,024,134.30x = 99,393,310.19 × 39,429,086.30
4. Step 4: Simplify right side
   72,024,134.30x = 3,918,987,404,826,409.50
5. Step 5: Solve for x
   x = 3,918,987,404,826,409.50/72,024,134.30
6. Step 6: Final answer
   x = 54,412,141.75