Finding the Fourth Proportional to 468,111.80, 646,071.56 and 286,924.52

Step by Step Solution

1. Step 1: Write the proportion equation
   468,111.80 : 646,071.56 = 286,924.52 : x
2. Step 2: Convert to fraction form
   468,111.80/646,071.56 = 286,924.52/x
3. Step 3: Cross multiply
   468,111.80x = 646,071.56 × 286,924.52
4. Step 4: Simplify right side
   468,111.80x = 185,373,772,238.65
5. Step 5: Solve for x
   x = 185,373,772,238.65/468,111.80
6. Step 6: Final answer
   x = 396,003.20