Finding the Fourth Proportional to 530,016.10, 795,062.55 and 319,200.10

Step by Step Solution

1. Step 1: Write the proportion equation
   530,016.10 : 795,062.55 = 319,200.10 : x
2. Step 2: Convert to fraction form
   530,016.10/795,062.55 = 319,200.10/x
3. Step 3: Cross multiply
   530,016.10x = 795,062.55 × 319,200.10
4. Step 4: Simplify right side
   530,016.10x = 253,784,045,466.26
5. Step 5: Solve for x
   x = 253,784,045,466.26/530,016.10
6. Step 6: Final answer
   x = 478,823.28