Finding the Fourth Proportional to 90,908.18, 136,176.37 and 74,101.08

Step by Step Solution

1. Step 1: Write the proportion equation
   90,908.18 : 136,176.37 = 74,101.08 : x
2. Step 2: Convert to fraction form
   90,908.18/136,176.37 = 74,101.08/x
3. Step 3: Cross multiply
   90,908.18x = 136,176.37 × 74,101.08
4. Step 4: Simplify right side
   90,908.18x = 10,090,816,412.89
5. Step 5: Solve for x
   x = 10,090,816,412.89/90,908.18
6. Step 6: Final answer
   x = 111,000.09