Finding the Fourth Proportional to 143,742.32, 198,436.74 and 111,404.96

Step by Step Solution

1. Step 1: Write the proportion equation
   143,742.32 : 198,436.74 = 111,404.96 : x
2. Step 2: Convert to fraction form
   143,742.32/198,436.74 = 111,404.96/x
3. Step 3: Cross multiply
   143,742.32x = 198,436.74 × 111,404.96
4. Step 4: Simplify right side
   143,742.32x = 22,106,837,082.23
5. Step 5: Solve for x
   x = 22,106,837,082.23/143,742.32
6. Step 6: Final answer
   x = 153,794.91