Finding the Fourth Proportional to 103,328.46, 142,693.25 and 89,047.35

Step by Step Solution

1. Step 1: Write the proportion equation
   103,328.46 : 142,693.25 = 89,047.35 : x
2. Step 2: Convert to fraction form
   103,328.46/142,693.25 = 89,047.35/x
3. Step 3: Cross multiply
   103,328.46x = 142,693.25 × 89,047.35
4. Step 4: Simplify right side
   103,328.46x = 12,706,455,330.15
5. Step 5: Solve for x
   x = 12,706,455,330.15/103,328.46
6. Step 6: Final answer
   x = 122,971.50