Finding the Fourth Proportional to 58,188.42, 80,330.58 and 39,168.30

Step by Step Solution

1. Step 1: Write the proportion equation
   58,188.42 : 80,330.58 = 39,168.30 : x
2. Step 2: Convert to fraction form
   58,188.42/80,330.58 = 39,168.30/x
3. Step 3: Cross multiply
   58,188.42x = 80,330.58 × 39,168.30
4. Step 4: Simplify right side
   58,188.42x = 3,146,412,256.61
5. Step 5: Solve for x
   x = 3,146,412,256.61/58,188.42
6. Step 6: Final answer
   x = 54,072.83