Finding the Fourth Proportional to 56,601.07, 78,104.39 and 31,107.15

Step by Step Solution

1. Step 1: Write the proportion equation
   56,601.07 : 78,104.39 = 31,107.15 : x
2. Step 2: Convert to fraction form
   56,601.07/78,104.39 = 31,107.15/x
3. Step 3: Cross multiply
   56,601.07x = 78,104.39 × 31,107.15
4. Step 4: Simplify right side
   56,601.07x = 2,429,604,819.85
5. Step 5: Solve for x
   x = 2,429,604,819.85/56,601.07
6. Step 6: Final answer
   x = 42,925.07