Finding the Fourth Proportional to 110,386.32, 166,317.05 and 99,869.69

Step by Step Solution

1. Step 1: Write the proportion equation
   110,386.32 : 166,317.05 = 99,869.69 : x
2. Step 2: Convert to fraction form
   110,386.32/166,317.05 = 99,869.69/x
3. Step 3: Cross multiply
   110,386.32x = 166,317.05 × 99,869.69
4. Step 4: Simplify right side
   110,386.32x = 16,610,030,894.28
5. Step 5: Solve for x
   x = 16,610,030,894.28/110,386.32
6. Step 6: Final answer
   x = 150,471.82