Finding the Fourth Proportional to 141,579.72, 212,467.94 and 91,535.69

Step by Step Solution

1. Step 1: Write the proportion equation
   141,579.72 : 212,467.94 = 91,535.69 : x
2. Step 2: Convert to fraction form
   141,579.72/212,467.94 = 91,535.69/x
3. Step 3: Cross multiply
   141,579.72x = 212,467.94 × 91,535.69
4. Step 4: Simplify right side
   141,579.72x = 19,448,399,490.78
5. Step 5: Solve for x
   x = 19,448,399,490.78/141,579.72
6. Step 6: Final answer
   x = 137,367.13