Finding the Fourth Proportional to 78,658.56, 108,547.56 and 42,849

Step by Step Solution

1. Step 1: Write the proportion equation
   78,658.56 : 108,547.56 = 42,849 : x
2. Step 2: Convert to fraction form
   78,658.56/108,547.56 = 42,849/x
3. Step 3: Cross multiply
   78,658.56x = 108,547.56 × 42,849
4. Step 4: Simplify right side
   78,658.56x = 4,651,154,398.44
5. Step 5: Solve for x
   x = 4,651,154,398.44/78,658.56
6. Step 6: Final answer
   x = 59,130.94