Finding the Fourth Proportional to 90,389.31, 135,596.66 and 37,786.83

Step by Step Solution

1. Step 1: Write the proportion equation
   90,389.31 : 135,596.66 = 37,786.83 : x
2. Step 2: Convert to fraction form
   90,389.31/135,596.66 = 37,786.83/x
3. Step 3: Cross multiply
   90,389.31x = 135,596.66 × 37,786.83
4. Step 4: Simplify right side
   90,389.31x = 5,123,767,751.05
5. Step 5: Solve for x
   x = 5,123,767,751.05/90,389.31
6. Step 6: Final answer
   x = 56,685.55