Finding the Fourth Proportional to 98,538.12, 147,810.42 and 28,418.04

Step by Step Solution

1. Step 1: Write the proportion equation
   98,538.12 : 147,810.42 = 28,418.04 : x
2. Step 2: Convert to fraction form
   98,538.12/147,810.42 = 28,418.04/x
3. Step 3: Cross multiply
   98,538.12x = 147,810.42 × 28,418.04
4. Step 4: Simplify right side
   98,538.12x = 4,200,482,427.98
5. Step 5: Solve for x
   x = 4,200,482,427.98/98,538.12
6. Step 6: Final answer
   x = 42,627.99