Finding the Fourth Proportional to 112,280.54, 168,274.55 and 45,642.83

Step by Step Solution

1. Step 1: Write the proportion equation
   112,280.54 : 168,274.55 = 45,642.83 : x
2. Step 2: Convert to fraction form
   112,280.54/168,274.55 = 45,642.83/x
3. Step 3: Cross multiply
   112,280.54x = 168,274.55 × 45,642.83
4. Step 4: Simplify right side
   112,280.54x = 7,680,526,678.98
5. Step 5: Solve for x
   x = 7,680,526,678.98/112,280.54
6. Step 6: Final answer
   x = 68,404.79