Finding the Fourth Proportional to 98,103.30, 146,766.15 and 85,100.10

Step by Step Solution

1. Step 1: Write the proportion equation
   98,103.30 : 146,766.15 = 85,100.10 : x
2. Step 2: Convert to fraction form
   98,103.30/146,766.15 = 85,100.10/x
3. Step 3: Cross multiply
   98,103.30x = 146,766.15 × 85,100.10
4. Step 4: Simplify right side
   98,103.30x = 12,489,814,041.62
5. Step 5: Solve for x
   x = 12,489,814,041.62/98,103.30
6. Step 6: Final answer
   x = 127,312.88