Finding the Fourth Proportional to 520,152.10, 780,422.55 and 204,828.82

Step by Step Solution

1. Step 1: Write the proportion equation
   520,152.10 : 780,422.55 = 204,828.82 : x
2. Step 2: Convert to fraction form
   520,152.10/780,422.55 = 204,828.82/x
3. Step 3: Cross multiply
   520,152.10x = 780,422.55 × 204,828.82
4. Step 4: Simplify right side
   520,152.10x = 159,853,030,017.89
5. Step 5: Solve for x
   x = 159,853,030,017.89/520,152.10
6. Step 6: Final answer
   x = 307,319.78