Finding the Fourth Proportional to 78,185.67, 107,896.37 and 42,375.57

Step by Step Solution

1. Step 1: Write the proportion equation
   78,185.67 : 107,896.37 = 42,375.57 : x
2. Step 2: Convert to fraction form
   78,185.67/107,896.37 = 42,375.57/x
3. Step 3: Cross multiply
   78,185.67x = 107,896.37 × 42,375.57
4. Step 4: Simplify right side
   78,185.67x = 4,572,169,967.80
5. Step 5: Solve for x
   x = 4,572,169,967.80/78,185.67
6. Step 6: Final answer
   x = 58,478.36