Finding the Fourth Proportional to 54,085.52, 74,642.06 and 31,122.38

Step by Step Solution

1. Step 1: Write the proportion equation
   54,085.52 : 74,642.06 = 31,122.38 : x
2. Step 2: Convert to fraction form
   54,085.52/74,642.06 = 31,122.38/x
3. Step 3: Cross multiply
   54,085.52x = 74,642.06 × 31,122.38
4. Step 4: Simplify right side
   54,085.52x = 2,323,038,224.79
5. Step 5: Solve for x
   x = 2,323,038,224.79/54,085.52
6. Step 6: Final answer
   x = 42,951.20