Finding the Fourth Proportional to 108,340.74, 149,198.36 and 89,302.91

Step by Step Solution

1. Step 1: Write the proportion equation
   108,340.74 : 149,198.36 = 89,302.91 : x
2. Step 2: Convert to fraction form
   108,340.74/149,198.36 = 89,302.91/x
3. Step 3: Cross multiply
   108,340.74x = 149,198.36 × 89,302.91
4. Step 4: Simplify right side
   108,340.74x = 13,323,846,522.72
5. Step 5: Solve for x
   x = 13,323,846,522.72/108,340.74
6. Step 6: Final answer
   x = 122,980.94