Finding the Fourth Proportional to 78,187.52, 107,899.33 and 42,378.14

Step by Step Solution

1. Step 1: Write the proportion equation
   78,187.52 : 107,899.33 = 42,378.14 : x
2. Step 2: Convert to fraction form
   78,187.52/107,899.33 = 42,378.14/x
3. Step 3: Cross multiply
   78,187.52x = 107,899.33 × 42,378.14
4. Step 4: Simplify right side
   78,187.52x = 4,572,572,267.20
5. Step 5: Solve for x
   x = 4,572,572,267.20/78,187.52
6. Step 6: Final answer
   x = 58,482.12