Finding the Fourth Proportional to 78,395.76, 108,188.10 and 42,585.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,395.76 : 108,188.10 = 42,585.76 : x
2. Step 2: Convert to fraction form
   78,395.76/108,188.10 = 42,585.76/x
3. Step 3: Cross multiply
   78,395.76x = 108,188.10 × 42,585.76
4. Step 4: Simplify right side
   78,395.76x = 4,607,272,461.46
5. Step 5: Solve for x
   x = 4,607,272,461.46/78,395.76
6. Step 6: Final answer
   x = 58,769.41