Finding the Fourth Proportional to 90,470, 124,848.72 and 50,182.40

Step by Step Solution

1. Step 1: Write the proportion equation
   90,470 : 124,848.72 = 50,182.40 : x
2. Step 2: Convert to fraction form
   90,470/124,848.72 = 50,182.40/x
3. Step 3: Cross multiply
   90,470x = 124,848.72 × 50,182.40
4. Step 4: Simplify right side
   90,470x = 6,265,208,406.53
5. Step 5: Solve for x
   x = 6,265,208,406.53/90,470
6. Step 6: Final answer
   x = 69,251.78