Finding the Fourth Proportional to 78,525.48, 108,364.05 and 42,715.74

Step by Step Solution

1. Step 1: Write the proportion equation
   78,525.48 : 108,364.05 = 42,715.74 : x
2. Step 2: Convert to fraction form
   78,525.48/108,364.05 = 42,715.74/x
3. Step 3: Cross multiply
   78,525.48x = 108,364.05 × 42,715.74
4. Step 4: Simplify right side
   78,525.48x = 4,628,850,585.15
5. Step 5: Solve for x
   x = 4,628,850,585.15/78,525.48
6. Step 6: Final answer
   x = 58,947.12