Finding the Fourth Proportional to 65,278.72, 90,099.12 and 37,000

Step by Step Solution

1. Step 1: Write the proportion equation
   65,278.72 : 90,099.12 = 37,000 : x
2. Step 2: Convert to fraction form
   65,278.72/90,099.12 = 37,000/x
3. Step 3: Cross multiply
   65,278.72x = 90,099.12 × 37,000
4. Step 4: Simplify right side
   65,278.72x = 3,333,667,440
5. Step 5: Solve for x
   x = 3,333,667,440/65,278.72
6. Step 6: Final answer
   x = 51,068.21