Finding the Fourth Proportional to 78,185.42, 107,894.92 and 42,374.92

Step by Step Solution

1. Step 1: Write the proportion equation
   78,185.42 : 107,894.92 = 42,374.92 : x
2. Step 2: Convert to fraction form
   78,185.42/107,894.92 = 42,374.92/x
3. Step 3: Cross multiply
   78,185.42x = 107,894.92 × 42,374.92
4. Step 4: Simplify right side
   78,185.42x = 4,572,038,603.41
5. Step 5: Solve for x
   x = 4,572,038,603.41/78,185.42
6. Step 6: Final answer
   x = 58,476.87