Finding the Fourth Proportional to 131,578,909.77, 181,571,701.78 and 72,028,685.82

Step by Step Solution

1. Step 1: Write the proportion equation
   131,578,909.77 : 181,571,701.78 = 72,028,685.82 : x
2. Step 2: Convert to fraction form
   131,578,909.77/181,571,701.78 = 72,028,685.82/x
3. Step 3: Cross multiply
   131,578,909.77x = 181,571,701.78 × 72,028,685.82
4. Step 4: Simplify right side
   131,578,909.77x = 13,078,371,060,529,392
5. Step 5: Solve for x
   x = 13,078,371,060,529,392/131,578,909.77
6. Step 6: Final answer
   x = 99,395,648.47