Finding the Fourth Proportional to 143,575.42, 197,921.61 and 91,886.82

Step by Step Solution

1. Step 1: Write the proportion equation
   143,575.42 : 197,921.61 = 91,886.82 : x
2. Step 2: Convert to fraction form
   143,575.42/197,921.61 = 91,886.82/x
3. Step 3: Cross multiply
   143,575.42x = 197,921.61 × 91,886.82
4. Step 4: Simplify right side
   143,575.42x = 18,186,387,352.18
5. Step 5: Solve for x
   x = 18,186,387,352.18/143,575.42
6. Step 6: Final answer
   x = 126,667.83