Finding the Fourth Proportional to 112,689.45, 169,099.83 and 42,574.23

Step by Step Solution

1. Step 1: Write the proportion equation
   112,689.45 : 169,099.83 = 42,574.23 : x
2. Step 2: Convert to fraction form
   112,689.45/169,099.83 = 42,574.23/x
3. Step 3: Cross multiply
   112,689.45x = 169,099.83 × 42,574.23
4. Step 4: Simplify right side
   112,689.45x = 7,199,295,055.38
5. Step 5: Solve for x
   x = 7,199,295,055.38/112,689.45
6. Step 6: Final answer
   x = 63,886.15