Finding the Fourth Proportional to 103,507.60, 143,034.12 and 88,186

Step by Step Solution

1. Step 1: Write the proportion equation
   103,507.60 : 143,034.12 = 88,186 : x
2. Step 2: Convert to fraction form
   103,507.60/143,034.12 = 88,186/x
3. Step 3: Cross multiply
   103,507.60x = 143,034.12 × 88,186
4. Step 4: Simplify right side
   103,507.60x = 12,613,606,906.32
5. Step 5: Solve for x
   x = 12,613,606,906.32/103,507.60
6. Step 6: Final answer
   x = 121,861.65