Finding the Fourth Proportional to 78,142.83, 107,836.72 and 42,333.13

Step by Step Solution

1. Step 1: Write the proportion equation
   78,142.83 : 107,836.72 = 42,333.13 : x
2. Step 2: Convert to fraction form
   78,142.83/107,836.72 = 42,333.13/x
3. Step 3: Cross multiply
   78,142.83x = 107,836.72 × 42,333.13
4. Step 4: Simplify right side
   78,142.83x = 4,565,065,915.50
5. Step 5: Solve for x
   x = 4,565,065,915.50/78,142.83
6. Step 6: Final answer
   x = 58,419.51