Finding the Fourth Proportional to 78,513.86, 108,349.86 and 42,704.60

Step by Step Solution

1. Step 1: Write the proportion equation
   78,513.86 : 108,349.86 = 42,704.60 : x
2. Step 2: Convert to fraction form
   78,513.86/108,349.86 = 42,704.60/x
3. Step 3: Cross multiply
   78,513.86x = 108,349.86 × 42,704.60
4. Step 4: Simplify right side
   78,513.86x = 4,627,037,431.36
5. Step 5: Solve for x
   x = 4,627,037,431.36/78,513.86
6. Step 6: Final answer
   x = 58,932.75