Finding the Fourth Proportional to 56,733.32, 78,291.32 and 31,239.15

Step by Step Solution

1. Step 1: Write the proportion equation
   56,733.32 : 78,291.32 = 31,239.15 : x
2. Step 2: Convert to fraction form
   56,733.32/78,291.32 = 31,239.15/x
3. Step 3: Cross multiply
   56,733.32x = 78,291.32 × 31,239.15
4. Step 4: Simplify right side
   56,733.32x = 2,445,754,132.98
5. Step 5: Solve for x
   x = 2,445,754,132.98/56,733.32
6. Step 6: Final answer
   x = 43,109.66