Finding the Fourth Proportional to 56,801.13, 78,385.77 and 31,650.63

Step by Step Solution

1. Step 1: Write the proportion equation
   56,801.13 : 78,385.77 = 31,650.63 : x
2. Step 2: Convert to fraction form
   56,801.13/78,385.77 = 31,650.63/x
3. Step 3: Cross multiply
   56,801.13x = 78,385.77 × 31,650.63
4. Step 4: Simplify right side
   56,801.13x = 2,480,959,003.54
5. Step 5: Solve for x
   x = 2,480,959,003.54/56,801.13
6. Step 6: Final answer
   x = 43,677.99