Finding the Fourth Proportional to 56,641.08, 78,165.95 and 31,145.82

Step by Step Solution

1. Step 1: Write the proportion equation
   56,641.08 : 78,165.95 = 31,145.82 : x
2. Step 2: Convert to fraction form
   56,641.08/78,165.95 = 31,145.82/x
3. Step 3: Cross multiply
   56,641.08x = 78,165.95 × 31,145.82
4. Step 4: Simplify right side
   56,641.08x = 2,434,542,608.83
5. Step 5: Solve for x
   x = 2,434,542,608.83/56,641.08
6. Step 6: Final answer
   x = 42,981.92