Finding the Fourth Proportional to 78,179.61, 107,887.59 and 42,370.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,179.61 : 107,887.59 = 42,370.50 : x
2. Step 2: Convert to fraction form
   78,179.61/107,887.59 = 42,370.50/x
3. Step 3: Cross multiply
   78,179.61x = 107,887.59 × 42,370.50
4. Step 4: Simplify right side
   78,179.61x = 4,571,251,132.10
5. Step 5: Solve for x
   x = 4,571,251,132.10/78,179.61
6. Step 6: Final answer
   x = 58,471.14