Finding the Fourth Proportional to 90,581.63, 135,887.29 and 37,259.15

Step by Step Solution

1. Step 1: Write the proportion equation
   90,581.63 : 135,887.29 = 37,259.15 : x
2. Step 2: Convert to fraction form
   90,581.63/135,887.29 = 37,259.15/x
3. Step 3: Cross multiply
   90,581.63x = 135,887.29 × 37,259.15
4. Step 4: Simplify right side
   90,581.63x = 5,063,044,530.80
5. Step 5: Solve for x
   x = 5,063,044,530.80/90,581.63
6. Step 6: Final answer
   x = 55,894.83