Finding the Fourth Proportional to 646,181.31, 892,476.72 and 430,947.30

Step by Step Solution

1. Step 1: Write the proportion equation
   646,181.31 : 892,476.72 = 430,947.30 : x
2. Step 2: Convert to fraction form
   646,181.31/892,476.72 = 430,947.30/x
3. Step 3: Cross multiply
   646,181.31x = 892,476.72 × 430,947.30
4. Step 4: Simplify right side
   646,181.31x = 384,610,432,796.86
5. Step 5: Solve for x
   x = 384,610,432,796.86/646,181.31
6. Step 6: Final answer
   x = 595,205.13