Finding the Fourth Proportional to 90,109.52, 135,174 and 37,489.76

Step by Step Solution

1. Step 1: Write the proportion equation
   90,109.52 : 135,174 = 37,489.76 : x
2. Step 2: Convert to fraction form
   90,109.52/135,174 = 37,489.76/x
3. Step 3: Cross multiply
   90,109.52x = 135,174 × 37,489.76
4. Step 4: Simplify right side
   90,109.52x = 5,067,640,818.24
5. Step 5: Solve for x
   x = 5,067,640,818.24/90,109.52
6. Step 6: Final answer
   x = 56,238.68