Finding the Fourth Proportional to 151,395,139.32, 208,925,131.83 and 81,780,509.04

Step by Step Solution

1. Step 1: Write the proportion equation
   151,395,139.32 : 208,925,131.83 = 81,780,509.04 : x
2. Step 2: Convert to fraction form
   151,395,139.32/208,925,131.83 = 81,780,509.04/x
3. Step 3: Cross multiply
   151,395,139.32x = 208,925,131.83 × 81,780,509.04
4. Step 4: Simplify right side
   151,395,139.32x = 17,086,003,632,306,510
5. Step 5: Solve for x
   x = 17,086,003,632,306,510/151,395,139.32
6. Step 6: Final answer
   x = 112,857,015.81