Finding the Fourth Proportional to 495,159.77, 683,380.82 and 291,200.83

Step by Step Solution

1. Step 1: Write the proportion equation
   495,159.77 : 683,380.82 = 291,200.83 : x
2. Step 2: Convert to fraction form
   495,159.77/683,380.82 = 291,200.83/x
3. Step 3: Cross multiply
   495,159.77x = 683,380.82 × 291,200.83
4. Step 4: Simplify right side
   495,159.77x = 199,001,061,009.63
5. Step 5: Solve for x
   x = 199,001,061,009.63/495,159.77
6. Step 6: Final answer
   x = 401,892.63