Finding the Fourth Proportional to 78,310.64, 108,069.72 and 42,501.08

Step by Step Solution

1. Step 1: Write the proportion equation
   78,310.64 : 108,069.72 = 42,501.08 : x
2. Step 2: Convert to fraction form
   78,310.64/108,069.72 = 42,501.08/x
3. Step 3: Cross multiply
   78,310.64x = 108,069.72 × 42,501.08
4. Step 4: Simplify right side
   78,310.64x = 4,593,079,815.30
5. Step 5: Solve for x
   x = 4,593,079,815.30/78,310.64
6. Step 6: Final answer
   x = 58,652.05