Finding the Fourth Proportional to 143,507.62, 215,120.89 and 53,484.42

Step by Step Solution

1. Step 1: Write the proportion equation
   143,507.62 : 215,120.89 = 53,484.42 : x
2. Step 2: Convert to fraction form
   143,507.62/215,120.89 = 53,484.42/x
3. Step 3: Cross multiply
   143,507.62x = 215,120.89 × 53,484.42
4. Step 4: Simplify right side
   143,507.62x = 11,505,616,031.53
5. Step 5: Solve for x
   x = 11,505,616,031.53/143,507.62
6. Step 6: Final answer
   x = 80,174.25