Finding the Fourth Proportional to 78,495.24, 108,323.94 and 42,685.64

Step by Step Solution

1. Step 1: Write the proportion equation
   78,495.24 : 108,323.94 = 42,685.64 : x
2. Step 2: Convert to fraction form
   78,495.24/108,323.94 = 42,685.64/x
3. Step 3: Cross multiply
   78,495.24x = 108,323.94 × 42,685.64
4. Step 4: Simplify right side
   78,495.24x = 4,623,876,706.22
5. Step 5: Solve for x
   x = 4,623,876,706.22/78,495.24
6. Step 6: Final answer
   x = 58,906.46