Finding the Fourth Proportional to 112,377.91, 155,086.24 and 64,631.31

Step by Step Solution

1. Step 1: Write the proportion equation
   112,377.91 : 155,086.24 = 64,631.31 : x
2. Step 2: Convert to fraction form
   112,377.91/155,086.24 = 64,631.31/x
3. Step 3: Cross multiply
   112,377.91x = 155,086.24 × 64,631.31
4. Step 4: Simplify right side
   112,377.91x = 10,023,426,854.17
5. Step 5: Solve for x
   x = 10,023,426,854.17/112,377.91
6. Step 6: Final answer
   x = 89,193.92