Finding the Fourth Proportional to 64,991.09, 89,683.42 and 37,764.76

Step by Step Solution

1. Step 1: Write the proportion equation
   64,991.09 : 89,683.42 = 37,764.76 : x
2. Step 2: Convert to fraction form
   64,991.09/89,683.42 = 37,764.76/x
3. Step 3: Cross multiply
   64,991.09x = 89,683.42 × 37,764.76
4. Step 4: Simplify right side
   64,991.09x = 3,386,872,832.28
5. Step 5: Solve for x
   x = 3,386,872,832.28/64,991.09
6. Step 6: Final answer
   x = 52,112.88