Finding the Fourth Proportional to 78,684.22, 108,581.16 and 42,874.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,684.22 : 108,581.16 = 42,874.50 : x
2. Step 2: Convert to fraction form
   78,684.22/108,581.16 = 42,874.50/x
3. Step 3: Cross multiply
   78,684.22x = 108,581.16 × 42,874.50
4. Step 4: Simplify right side
   78,684.22x = 4,655,362,944.42
5. Step 5: Solve for x
   x = 4,655,362,944.42/78,684.22
6. Step 6: Final answer
   x = 59,165.14