Finding the Fourth Proportional to 78,495.86, 108,325.68 and 42,685.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,495.86 : 108,325.68 = 42,685.76 : x
2. Step 2: Convert to fraction form
   78,495.86/108,325.68 = 42,685.76/x
3. Step 3: Cross multiply
   78,495.86x = 108,325.68 × 42,685.76
4. Step 4: Simplify right side
   78,495.86x = 4,623,963,978.32
5. Step 5: Solve for x
   x = 4,623,963,978.32/78,495.86
6. Step 6: Final answer
   x = 58,907.11