Finding the Fourth Proportional to 55,721.71, 76,895.95 and 31,522.15

Step by Step Solution

1. Step 1: Write the proportion equation
   55,721.71 : 76,895.95 = 31,522.15 : x
2. Step 2: Convert to fraction form
   55,721.71/76,895.95 = 31,522.15/x
3. Step 3: Cross multiply
   55,721.71x = 76,895.95 × 31,522.15
4. Step 4: Simplify right side
   55,721.71x = 2,423,925,670.29
5. Step 5: Solve for x
   x = 2,423,925,670.29/55,721.71
6. Step 6: Final answer
   x = 43,500.56