Finding the Fourth Proportional to 58,872.24, 88,345.80 and 21,428.72

Step by Step Solution

1. Step 1: Write the proportion equation
   58,872.24 : 88,345.80 = 21,428.72 : x
2. Step 2: Convert to fraction form
   58,872.24/88,345.80 = 21,428.72/x
3. Step 3: Cross multiply
   58,872.24x = 88,345.80 × 21,428.72
4. Step 4: Simplify right side
   58,872.24x = 1,893,137,411.38
5. Step 5: Solve for x
   x = 1,893,137,411.38/58,872.24
6. Step 6: Final answer
   x = 32,156.71