Finding the Fourth Proportional to 103,694.30, 155,311.05 and 89,870.30

Step by Step Solution

1. Step 1: Write the proportion equation
   103,694.30 : 155,311.05 = 89,870.30 : x
2. Step 2: Convert to fraction form
   103,694.30/155,311.05 = 89,870.30/x
3. Step 3: Cross multiply
   103,694.30x = 155,311.05 × 89,870.30
4. Step 4: Simplify right side
   103,694.30x = 13,957,850,656.82
5. Step 5: Solve for x
   x = 13,957,850,656.82/103,694.30
6. Step 6: Final answer
   x = 134,605.77