Finding the Fourth Proportional to 78,336.60, 108,104.58 and 42,526.60

Step by Step Solution

1. Step 1: Write the proportion equation
   78,336.60 : 108,104.58 = 42,526.60 : x
2. Step 2: Convert to fraction form
   78,336.60/108,104.58 = 42,526.60/x
3. Step 3: Cross multiply
   78,336.60x = 108,104.58 × 42,526.60
4. Step 4: Simplify right side
   78,336.60x = 4,597,320,231.83
5. Step 5: Solve for x
   x = 4,597,320,231.83/78,336.60
6. Step 6: Final answer
   x = 58,686.75