Finding the Fourth Proportional to 78,186, 107,896.07 and 42,375.09

Step by Step Solution

1. Step 1: Write the proportion equation
   78,186 : 107,896.07 = 42,375.09 : x
2. Step 2: Convert to fraction form
   78,186/107,896.07 = 42,375.09/x
3. Step 3: Cross multiply
   78,186x = 107,896.07 × 42,375.09
4. Step 4: Simplify right side
   78,186x = 4,572,105,782.83
5. Step 5: Solve for x
   x = 4,572,105,782.83/78,186
6. Step 6: Final answer
   x = 58,477.29