Finding the Fourth Proportional to 78,426.06, 108,225.08 and 42,615.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,426.06 : 108,225.08 = 42,615.32 : x
2. Step 2: Convert to fraction form
   78,426.06/108,225.08 = 42,615.32/x
3. Step 3: Cross multiply
   78,426.06x = 108,225.08 × 42,615.32
4. Step 4: Simplify right side
   78,426.06x = 4,612,045,662.02
5. Step 5: Solve for x
   x = 4,612,045,662.02/78,426.06
6. Step 6: Final answer
   x = 58,807.57