Finding the Fourth Proportional to 78,142.47, 107,836.65 and 42,332.63

Step by Step Solution

1. Step 1: Write the proportion equation
   78,142.47 : 107,836.65 = 42,332.63 : x
2. Step 2: Convert to fraction form
   78,142.47/107,836.65 = 42,332.63/x
3. Step 3: Cross multiply
   78,142.47x = 107,836.65 × 42,332.63
4. Step 4: Simplify right side
   78,142.47x = 4,565,008,465.71
5. Step 5: Solve for x
   x = 4,565,008,465.71/78,142.47
6. Step 6: Final answer
   x = 58,419.04