Finding the Fourth Proportional to 56,931.60, 78,566.24 and 31,437.93

Step by Step Solution

1. Step 1: Write the proportion equation
   56,931.60 : 78,566.24 = 31,437.93 : x
2. Step 2: Convert to fraction form
   56,931.60/78,566.24 = 31,437.93/x
3. Step 3: Cross multiply
   56,931.60x = 78,566.24 × 31,437.93
4. Step 4: Simplify right side
   56,931.60x = 2,469,960,326.70
5. Step 5: Solve for x
   x = 2,469,960,326.70/56,931.60
6. Step 6: Final answer
   x = 43,384.70