Finding the Fourth Proportional to 78,675.02, 108,572.78 and 42,865.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,675.02 : 108,572.78 = 42,865.02 : x
2. Step 2: Convert to fraction form
   78,675.02/108,572.78 = 42,865.02/x
3. Step 3: Cross multiply
   78,675.02x = 108,572.78 × 42,865.02
4. Step 4: Simplify right side
   78,675.02x = 4,653,974,386.16
5. Step 5: Solve for x
   x = 4,653,974,386.16/78,675.02
6. Step 6: Final answer
   x = 59,154.41