Finding the Fourth Proportional to 56,633.09, 78,155.67 and 31,141.40

Step by Step Solution

1. Step 1: Write the proportion equation
   56,633.09 : 78,155.67 = 31,141.40 : x
2. Step 2: Convert to fraction form
   56,633.09/78,155.67 = 31,141.40/x
3. Step 3: Cross multiply
   56,633.09x = 78,155.67 × 31,141.40
4. Step 4: Simplify right side
   56,633.09x = 2,433,876,981.74
5. Step 5: Solve for x
   x = 2,433,876,981.74/56,633.09
6. Step 6: Final answer
   x = 42,976.23