Finding the Fourth Proportional to 98,739.32, 147,764.52 and 80,762.18

Step by Step Solution

1. Step 1: Write the proportion equation
   98,739.32 : 147,764.52 = 80,762.18 : x
2. Step 2: Convert to fraction form
   98,739.32/147,764.52 = 80,762.18/x
3. Step 3: Cross multiply
   98,739.32x = 147,764.52 × 80,762.18
4. Step 4: Simplify right side
   98,739.32x = 11,933,784,023.03
5. Step 5: Solve for x
   x = 11,933,784,023.03/98,739.32
6. Step 6: Final answer
   x = 120,861.52