Finding the Fourth Proportional to 428,314.32, 642,420.45 and 112,795.83

Step by Step Solution

1. Step 1: Write the proportion equation
   428,314.32 : 642,420.45 = 112,795.83 : x
2. Step 2: Convert to fraction form
   428,314.32/642,420.45 = 112,795.83/x
3. Step 3: Cross multiply
   428,314.32x = 642,420.45 × 112,795.83
4. Step 4: Simplify right side
   428,314.32x = 72,462,347,866.72
5. Step 5: Solve for x
   x = 72,462,347,866.72/428,314.32
6. Step 6: Final answer
   x = 169,180.31