Finding the Fourth Proportional to 60,876.24, 91,220.15 and 42,192.78

Step by Step Solution

1. Step 1: Write the proportion equation
   60,876.24 : 91,220.15 = 42,192.78 : x
2. Step 2: Convert to fraction form
   60,876.24/91,220.15 = 42,192.78/x
3. Step 3: Cross multiply
   60,876.24x = 91,220.15 × 42,192.78
4. Step 4: Simplify right side
   60,876.24x = 3,848,831,509.55
5. Step 5: Solve for x
   x = 3,848,831,509.55/60,876.24
6. Step 6: Final answer
   x = 63,223.87