Finding the Fourth Proportional to 78,778.10, 108,715.14 and 42,968.41

Step by Step Solution

1. Step 1: Write the proportion equation
   78,778.10 : 108,715.14 = 42,968.41 : x
2. Step 2: Convert to fraction form
   78,778.10/108,715.14 = 42,968.41/x
3. Step 3: Cross multiply
   78,778.10x = 108,715.14 × 42,968.41
4. Step 4: Simplify right side
   78,778.10x = 4,671,316,436.94
5. Step 5: Solve for x
   x = 4,671,316,436.94/78,778.10
6. Step 6: Final answer
   x = 59,297.14