Finding the Fourth Proportional to 78,186.54, 107,896.98 and 42,376.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,186.54 : 107,896.98 = 42,376.56 : x
2. Step 2: Convert to fraction form
   78,186.54/107,896.98 = 42,376.56/x
3. Step 3: Cross multiply
   78,186.54x = 107,896.98 × 42,376.56
4. Step 4: Simplify right side
   78,186.54x = 4,572,302,846.79
5. Step 5: Solve for x
   x = 4,572,302,846.79/78,186.54
6. Step 6: Final answer
   x = 58,479.41