Finding the Fourth Proportional to 280,499,366.23, 387,081,700.09 and 156,741,060.31

Step by Step Solution

1. Step 1: Write the proportion equation
   280,499,366.23 : 387,081,700.09 = 156,741,060.31 : x
2. Step 2: Convert to fraction form
   280,499,366.23/387,081,700.09 = 156,741,060.31/x
3. Step 3: Cross multiply
   280,499,366.23x = 387,081,700.09 × 156,741,060.31
4. Step 4: Simplify right side
   280,499,366.23x = 60,671,596,098,704,016
5. Step 5: Solve for x
   x = 60,671,596,098,704,016/280,499,366.23
6. Step 6: Final answer
   x = 216,298,514.02