Finding the Fourth Proportional to 142,404.15, 196,339.09 and 91,326.76

Step by Step Solution

1. Step 1: Write the proportion equation
   142,404.15 : 196,339.09 = 91,326.76 : x
2. Step 2: Convert to fraction form
   142,404.15/196,339.09 = 91,326.76/x
3. Step 3: Cross multiply
   142,404.15x = 196,339.09 × 91,326.76
4. Step 4: Simplify right side
   142,404.15x = 17,931,012,951.05
5. Step 5: Solve for x
   x = 17,931,012,951.05/142,404.15
6. Step 6: Final answer
   x = 125,916.37