Finding the Fourth Proportional to 78,411.68, 108,207.54 and 42,601.98

Step by Step Solution

1. Step 1: Write the proportion equation
   78,411.68 : 108,207.54 = 42,601.98 : x
2. Step 2: Convert to fraction form
   78,411.68/108,207.54 = 42,601.98/x
3. Step 3: Cross multiply
   78,411.68x = 108,207.54 × 42,601.98
4. Step 4: Simplify right side
   78,411.68x = 4,609,855,454.93
5. Step 5: Solve for x
   x = 4,609,855,454.93/78,411.68
6. Step 6: Final answer
   x = 58,790.42