Finding the Fourth Proportional to 90,668.28, 136,080.18 and 37,400.52

Step by Step Solution

1. Step 1: Write the proportion equation
   90,668.28 : 136,080.18 = 37,400.52 : x
2. Step 2: Convert to fraction form
   90,668.28/136,080.18 = 37,400.52/x
3. Step 3: Cross multiply
   90,668.28x = 136,080.18 × 37,400.52
4. Step 4: Simplify right side
   90,668.28x = 5,089,469,493.69
5. Step 5: Solve for x
   x = 5,089,469,493.69/90,668.28
6. Step 6: Final answer
   x = 56,132.86