Finding the Fourth Proportional to 105,101.31, 145,044.17 and 59,787.28

Step by Step Solution

1. Step 1: Write the proportion equation
   105,101.31 : 145,044.17 = 59,787.28 : x
2. Step 2: Convert to fraction form
   105,101.31/145,044.17 = 59,787.28/x
3. Step 3: Cross multiply
   105,101.31x = 145,044.17 × 59,787.28
4. Step 4: Simplify right side
   105,101.31x = 8,671,796,510.73
5. Step 5: Solve for x
   x = 8,671,796,510.73/105,101.31
6. Step 6: Final answer
   x = 82,508.93