Finding the Fourth Proportional to 98,362.98, 147,432.84 and 86,493.81

Step by Step Solution

1. Step 1: Write the proportion equation
   98,362.98 : 147,432.84 = 86,493.81 : x
2. Step 2: Convert to fraction form
   98,362.98/147,432.84 = 86,493.81/x
3. Step 3: Cross multiply
   98,362.98x = 147,432.84 × 86,493.81
4. Step 4: Simplify right side
   98,362.98x = 12,752,028,050.72
5. Step 5: Solve for x
   x = 12,752,028,050.72/98,362.98
6. Step 6: Final answer
   x = 129,642.56