Finding the Fourth Proportional to 154,068.18, 231,168.15 and 74,067.72

Step by Step Solution

1. Step 1: Write the proportion equation
   154,068.18 : 231,168.15 = 74,067.72 : x
2. Step 2: Convert to fraction form
   154,068.18/231,168.15 = 74,067.72/x
3. Step 3: Cross multiply
   154,068.18x = 231,168.15 × 74,067.72
4. Step 4: Simplify right side
   154,068.18x = 17,122,097,807.12
5. Step 5: Solve for x
   x = 17,122,097,807.12/154,068.18
6. Step 6: Final answer
   x = 111,133.25