Finding the Fourth Proportional to 64,569.48, 89,101.80 and 37,719.60

Step by Step Solution

1. Step 1: Write the proportion equation
   64,569.48 : 89,101.80 = 37,719.60 : x
2. Step 2: Convert to fraction form
   64,569.48/89,101.80 = 37,719.60/x
3. Step 3: Cross multiply
   64,569.48x = 89,101.80 × 37,719.60
4. Step 4: Simplify right side
   64,569.48x = 3,360,884,255.28
5. Step 5: Solve for x
   x = 3,360,884,255.28/64,569.48
6. Step 6: Final answer
   x = 52,050.66