Finding the Fourth Proportional to 103,466.61, 142,890.21 and 89,098.02

Step by Step Solution

1. Step 1: Write the proportion equation
   103,466.61 : 142,890.21 = 89,098.02 : x
2. Step 2: Convert to fraction form
   103,466.61/142,890.21 = 89,098.02/x
3. Step 3: Cross multiply
   103,466.61x = 142,890.21 × 89,098.02
4. Step 4: Simplify right side
   103,466.61x = 12,731,234,788.38
5. Step 5: Solve for x
   x = 12,731,234,788.38/103,466.61
6. Step 6: Final answer
   x = 123,046.80