Finding the Fourth Proportional to 78,057.02, 107,718.68 and 42,247.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,057.02 : 107,718.68 = 42,247.02 : x
2. Step 2: Convert to fraction form
   78,057.02/107,718.68 = 42,247.02/x
3. Step 3: Cross multiply
   78,057.02x = 107,718.68 × 42,247.02
4. Step 4: Simplify right side
   78,057.02x = 4,550,793,017.10
5. Step 5: Solve for x
   x = 4,550,793,017.10/78,057.02
6. Step 6: Final answer
   x = 58,300.88