Finding the Fourth Proportional to 428,896.82, 643,350.71 and 113,351

Step by Step Solution

1. Step 1: Write the proportion equation
   428,896.82 : 643,350.71 = 113,351 : x
2. Step 2: Convert to fraction form
   428,896.82/643,350.71 = 113,351/x
3. Step 3: Cross multiply
   428,896.82x = 643,350.71 × 113,351
4. Step 4: Simplify right side
   428,896.82x = 72,924,445,762.46
5. Step 5: Solve for x
   x = 72,924,445,762.46/428,896.82
6. Step 6: Final answer
   x = 170,027.95