Finding the Fourth Proportional to 131,978.40, 182,140.56 and 75,408

Step by Step Solution

1. Step 1: Write the proportion equation
   131,978.40 : 182,140.56 = 75,408 : x
2. Step 2: Convert to fraction form
   131,978.40/182,140.56 = 75,408/x
3. Step 3: Cross multiply
   131,978.40x = 182,140.56 × 75,408
4. Step 4: Simplify right side
   131,978.40x = 13,734,855,348.48
5. Step 5: Solve for x
   x = 13,734,855,348.48/131,978.40
6. Step 6: Final answer
   x = 104,068.96