Finding the Fourth Proportional to 112,942.89, 169,624.94 and 99,438.82

Step by Step Solution

1. Step 1: Write the proportion equation
   112,942.89 : 169,624.94 = 99,438.82 : x
2. Step 2: Convert to fraction form
   112,942.89/169,624.94 = 99,438.82/x
3. Step 3: Cross multiply
   112,942.89x = 169,624.94 × 99,438.82
4. Step 4: Simplify right side
   112,942.89x = 16,867,303,909.05
5. Step 5: Solve for x
   x = 16,867,303,909.05/112,942.89
6. Step 6: Final answer
   x = 149,343.65