Finding the Fourth Proportional to 64,862.34, 89,407.72 and 47,811.96

Step by Step Solution

1. Step 1: Write the proportion equation
   64,862.34 : 89,407.72 = 47,811.96 : x
2. Step 2: Convert to fraction form
   64,862.34/89,407.72 = 47,811.96/x
3. Step 3: Cross multiply
   64,862.34x = 89,407.72 × 47,811.96
4. Step 4: Simplify right side
   64,862.34x = 4,274,758,332.33
5. Step 5: Solve for x
   x = 4,274,758,332.33/64,862.34
6. Step 6: Final answer
   x = 65,905.09