Finding the Fourth Proportional to 105,499.92, 145,576.98 and 84,044.32

Step by Step Solution

1. Step 1: Write the proportion equation
   105,499.92 : 145,576.98 = 84,044.32 : x
2. Step 2: Convert to fraction form
   105,499.92/145,576.98 = 84,044.32/x
3. Step 3: Cross multiply
   105,499.92x = 145,576.98 × 84,044.32
4. Step 4: Simplify right side
   105,499.92x = 12,234,918,291.75
5. Step 5: Solve for x
   x = 12,234,918,291.75/105,499.92
6. Step 6: Final answer
   x = 115,970.88