Finding the Fourth Proportional to 99,810.02, 148,951.17 and 89,160.45

Step by Step Solution

1. Step 1: Write the proportion equation
   99,810.02 : 148,951.17 = 89,160.45 : x
2. Step 2: Convert to fraction form
   99,810.02/148,951.17 = 89,160.45/x
3. Step 3: Cross multiply
   99,810.02x = 148,951.17 × 89,160.45
4. Step 4: Simplify right side
   99,810.02x = 13,280,553,345.23
5. Step 5: Solve for x
   x = 13,280,553,345.23/99,810.02
6. Step 6: Final answer
   x = 133,058.32