Finding the Fourth Proportional to 131,123, 180,949.74 and 71,507

Step by Step Solution

1. Step 1: Write the proportion equation
   131,123 : 180,949.74 = 71,507 : x
2. Step 2: Convert to fraction form
   131,123/180,949.74 = 71,507/x
3. Step 3: Cross multiply
   131,123x = 180,949.74 × 71,507
4. Step 4: Simplify right side
   131,123x = 12,939,173,058.18
5. Step 5: Solve for x
   x = 12,939,173,058.18/131,123
6. Step 6: Final answer
   x = 98,679.66