Finding the Fourth Proportional to 64,900.76, 89,555.42 and 37,670.57

Step by Step Solution

1. Step 1: Write the proportion equation
   64,900.76 : 89,555.42 = 37,670.57 : x
2. Step 2: Convert to fraction form
   64,900.76/89,555.42 = 37,670.57/x
3. Step 3: Cross multiply
   64,900.76x = 89,555.42 × 37,670.57
4. Step 4: Simplify right side
   64,900.76x = 3,373,603,700.22
5. Step 5: Solve for x
   x = 3,373,603,700.22/64,900.76
6. Step 6: Final answer
   x = 51,980.96