Finding the Fourth Proportional to 99,478.31, 149,235.92 and 32,919

Step by Step Solution

1. Step 1: Write the proportion equation
   99,478.31 : 149,235.92 = 32,919 : x
2. Step 2: Convert to fraction form
   99,478.31/149,235.92 = 32,919/x
3. Step 3: Cross multiply
   99,478.31x = 149,235.92 × 32,919
4. Step 4: Simplify right side
   99,478.31x = 4,912,697,085.89
5. Step 5: Solve for x
   x = 4,912,697,085.89/99,478.31
6. Step 6: Final answer
   x = 49,384.61