Finding the Fourth Proportional to 103,467.61, 142,891.59 and 89,099.02

Step by Step Solution

1. Step 1: Write the proportion equation
   103,467.61 : 142,891.59 = 89,099.02 : x
2. Step 2: Convert to fraction form
   103,467.61/142,891.59 = 89,099.02/x
3. Step 3: Cross multiply
   103,467.61x = 142,891.59 × 89,099.02
4. Step 4: Simplify right side
   103,467.61x = 12,731,500,635.24
5. Step 5: Solve for x
   x = 12,731,500,635.24/103,467.61
6. Step 6: Final answer
   x = 123,048.18