Finding the Fourth Proportional to 165,738.08, 228,725.52 and 90,290.72

Step by Step Solution

1. Step 1: Write the proportion equation
   165,738.08 : 228,725.52 = 90,290.72 : x
2. Step 2: Convert to fraction form
   165,738.08/228,725.52 = 90,290.72/x
3. Step 3: Cross multiply
   165,738.08x = 228,725.52 × 90,290.72
4. Step 4: Simplify right side
   165,738.08x = 20,651,791,883.17
5. Step 5: Solve for x
   x = 20,651,791,883.17/165,738.08
6. Step 6: Final answer
   x = 124,604.99