Finding the Fourth Proportional to 78,581.67, 108,445.37 and 42,772.98

Step by Step Solution

1. Step 1: Write the proportion equation
   78,581.67 : 108,445.37 = 42,772.98 : x
2. Step 2: Convert to fraction form
   78,581.67/108,445.37 = 42,772.98/x
3. Step 3: Cross multiply
   78,581.67x = 108,445.37 × 42,772.98
4. Step 4: Simplify right side
   78,581.67x = 4,638,531,642.10
5. Step 5: Solve for x
   x = 4,638,531,642.10/78,581.67
6. Step 6: Final answer
   x = 59,028.16