Finding the Fourth Proportional to 428,550.52, 591,405.06 and 247,300.06

Step by Step Solution

1. Step 1: Write the proportion equation
   428,550.52 : 591,405.06 = 247,300.06 : x
2. Step 2: Convert to fraction form
   428,550.52/591,405.06 = 247,300.06/x
3. Step 3: Cross multiply
   428,550.52x = 591,405.06 × 247,300.06
4. Step 4: Simplify right side
   428,550.52x = 146,254,506,822.30
5. Step 5: Solve for x
   x = 146,254,506,822.30/428,550.52
6. Step 6: Final answer
   x = 341,277.17