Finding the Fourth Proportional to 131,899.32, 182,021.78 and 71,470

Step by Step Solution

1. Step 1: Write the proportion equation
   131,899.32 : 182,021.78 = 71,470 : x
2. Step 2: Convert to fraction form
   131,899.32/182,021.78 = 71,470/x
3. Step 3: Cross multiply
   131,899.32x = 182,021.78 × 71,470
4. Step 4: Simplify right side
   131,899.32x = 13,009,096,616.60
5. Step 5: Solve for x
   x = 13,009,096,616.60/131,899.32
6. Step 6: Final answer
   x = 98,628.99