Finding the Fourth Proportional to 154,146.63, 212,722.27 and 90,484.42

Step by Step Solution

1. Step 1: Write the proportion equation
   154,146.63 : 212,722.27 = 90,484.42 : x
2. Step 2: Convert to fraction form
   154,146.63/212,722.27 = 90,484.42/x
3. Step 3: Cross multiply
   154,146.63x = 212,722.27 × 90,484.42
4. Step 4: Simplify right side
   154,146.63x = 19,248,051,222.03
5. Step 5: Solve for x
   x = 19,248,051,222.03/154,146.63
6. Step 6: Final answer
   x = 124,868.45