Finding the Fourth Proportional to 64,820.12, 89,457.63 and 37,971.86

Step by Step Solution

1. Step 1: Write the proportion equation
   64,820.12 : 89,457.63 = 37,971.86 : x
2. Step 2: Convert to fraction form
   64,820.12/89,457.63 = 37,971.86/x
3. Step 3: Cross multiply
   64,820.12x = 89,457.63 × 37,971.86
4. Step 4: Simplify right side
   64,820.12x = 3,396,872,602.29
5. Step 5: Solve for x
   x = 3,396,872,602.29/64,820.12
6. Step 6: Final answer
   x = 52,404.60