Finding the Fourth Proportional to 112,931,086.77, 155,757,039.08 and 81,686,341.98

Step by Step Solution

1. Step 1: Write the proportion equation
   112,931,086.77 : 155,757,039.08 = 81,686,341.98 : x
2. Step 2: Convert to fraction form
   112,931,086.77/155,757,039.08 = 81,686,341.98/x
3. Step 3: Cross multiply
   112,931,086.77x = 155,757,039.08 × 81,686,341.98
4. Step 4: Simplify right side
   112,931,086.77x = 12,723,222,759,672,672
5. Step 5: Solve for x
   x = 12,723,222,759,672,672/112,931,086.77
6. Step 6: Final answer
   x = 112,663,599.75