Finding the Fourth Proportional to 219,643.32, 303,123.20 and 124,150.72

Step by Step Solution

1. Step 1: Write the proportion equation
   219,643.32 : 303,123.20 = 124,150.72 : x
2. Step 2: Convert to fraction form
   219,643.32/303,123.20 = 124,150.72/x
3. Step 3: Cross multiply
   219,643.32x = 303,123.20 × 124,150.72
4. Step 4: Simplify right side
   219,643.32x = 37,632,963,528.70
5. Step 5: Solve for x
   x = 37,632,963,528.70/219,643.32
6. Step 6: Final answer
   x = 171,336.71