Finding the Fourth Proportional to 56,635.98, 78,154.65 and 31,141.86

Step by Step Solution

1. Step 1: Write the proportion equation
   56,635.98 : 78,154.65 = 31,141.86 : x
2. Step 2: Convert to fraction form
   56,635.98/78,154.65 = 31,141.86/x
3. Step 3: Cross multiply
   56,635.98x = 78,154.65 × 31,141.86
4. Step 4: Simplify right side
   56,635.98x = 2,433,881,168.65
5. Step 5: Solve for x
   x = 2,433,881,168.65/56,635.98
6. Step 6: Final answer
   x = 42,974.12