Finding the Fourth Proportional to 78,411.94, 108,208.56 and 42,601.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78,411.94 : 108,208.56 = 42,601.94 : x
2. Step 2: Convert to fraction form
   78,411.94/108,208.56 = 42,601.94/x
3. Step 3: Cross multiply
   78,411.94x = 108,208.56 × 42,601.94
4. Step 4: Simplify right side
   78,411.94x = 4,609,894,580.61
5. Step 5: Solve for x
   x = 4,609,894,580.61/78,411.94
6. Step 6: Final answer
   x = 58,790.72