Finding the Fourth Proportional to 98,300.80, 147,435 and 42,149.98

Step by Step Solution

1. Step 1: Write the proportion equation
   98,300.80 : 147,435 = 42,149.98 : x
2. Step 2: Convert to fraction form
   98,300.80/147,435 = 42,149.98/x
3. Step 3: Cross multiply
   98,300.80x = 147,435 × 42,149.98
4. Step 4: Simplify right side
   98,300.80x = 6,214,382,301.30
5. Step 5: Solve for x
   x = 6,214,382,301.30/98,300.80
6. Step 6: Final answer
   x = 63,218.02