Finding the Fourth Proportional to 56,733.72, 78,290.82 and 31,240.14

Step by Step Solution

1. Step 1: Write the proportion equation
   56,733.72 : 78,290.82 = 31,240.14 : x
2. Step 2: Convert to fraction form
   56,733.72/78,290.82 = 31,240.14/x
3. Step 3: Cross multiply
   56,733.72x = 78,290.82 × 31,240.14
4. Step 4: Simplify right side
   56,733.72x = 2,445,816,177.51
5. Step 5: Solve for x
   x = 2,445,816,177.51/56,733.72
6. Step 6: Final answer
   x = 43,110.45