Finding the Fourth Proportional to 78,475.18, 108,297.87 and 42,667.66

Step by Step Solution

1. Step 1: Write the proportion equation
   78,475.18 : 108,297.87 = 42,667.66 : x
2. Step 2: Convert to fraction form
   78,475.18/108,297.87 = 42,667.66/x
3. Step 3: Cross multiply
   78,475.18x = 108,297.87 × 42,667.66
4. Step 4: Simplify right side
   78,475.18x = 4,620,816,695.88
5. Step 5: Solve for x
   x = 4,620,816,695.88/78,475.18
6. Step 6: Final answer
   x = 58,882.52