Finding the Fourth Proportional to 468,118.80, 646,081.22 and 286,931.52

Step by Step Solution

1. Step 1: Write the proportion equation
   468,118.80 : 646,081.22 = 286,931.52 : x
2. Step 2: Convert to fraction form
   468,118.80/646,081.22 = 286,931.52/x
3. Step 3: Cross multiply
   468,118.80x = 646,081.22 × 286,931.52
4. Step 4: Simplify right side
   468,118.80x = 185,381,066,498.05
5. Step 5: Solve for x
   x = 185,381,066,498.05/468,118.80
6. Step 6: Final answer
   x = 396,012.86