Finding the Fourth Proportional to 315,460.32, 473,258.52 and 90,819.24

Step by Step Solution

1. Step 1: Write the proportion equation
   315,460.32 : 473,258.52 = 90,819.24 : x
2. Step 2: Convert to fraction form
   315,460.32/473,258.52 = 90,819.24/x
3. Step 3: Cross multiply
   315,460.32x = 473,258.52 × 90,819.24
4. Step 4: Simplify right side
   315,460.32x = 42,980,979,109.92
5. Step 5: Solve for x
   x = 42,980,979,109.92/315,460.32
6. Step 6: Final answer
   x = 136,248.45