Finding the Fourth Proportional to 90,482.18, 135,701.40 and 37,931

Step by Step Solution

1. Step 1: Write the proportion equation
   90,482.18 : 135,701.40 = 37,931 : x
2. Step 2: Convert to fraction form
   90,482.18/135,701.40 = 37,931/x
3. Step 3: Cross multiply
   90,482.18x = 135,701.40 × 37,931
4. Step 4: Simplify right side
   90,482.18x = 5,147,289,803.40
5. Step 5: Solve for x
   x = 5,147,289,803.40/90,482.18
6. Step 6: Final answer
   x = 56,887.33