Finding the Fourth Proportional to 98,727.83, 136,147.32 and 90,532.05

Step by Step Solution

1. Step 1: Write the proportion equation
   98,727.83 : 136,147.32 = 90,532.05 : x
2. Step 2: Convert to fraction form
   98,727.83/136,147.32 = 90,532.05/x
3. Step 3: Cross multiply
   98,727.83x = 136,147.32 × 90,532.05
4. Step 4: Simplify right side
   98,727.83x = 12,325,695,981.61
5. Step 5: Solve for x
   x = 12,325,695,981.61/98,727.83
6. Step 6: Final answer
   x = 124,845.21