Finding the Fourth Proportional to 112,978.57, 169,468.83 and 28,738.81

Step by Step Solution

1. Step 1: Write the proportion equation
   112,978.57 : 169,468.83 = 28,738.81 : x
2. Step 2: Convert to fraction form
   112,978.57/169,468.83 = 28,738.81/x
3. Step 3: Cross multiply
   112,978.57x = 169,468.83 × 28,738.81
4. Step 4: Simplify right side
   112,978.57x = 4,870,333,099.11
5. Step 5: Solve for x
   x = 4,870,333,099.11/112,978.57
6. Step 6: Final answer
   x = 43,108.47