Finding the Fourth Proportional to 64,817.54, 89,464.86 and 42,212.86

Step by Step Solution

1. Step 1: Write the proportion equation
   64,817.54 : 89,464.86 = 42,212.86 : x
2. Step 2: Convert to fraction form
   64,817.54/89,464.86 = 42,212.86/x
3. Step 3: Cross multiply
   64,817.54x = 89,464.86 × 42,212.86
4. Step 4: Simplify right side
   64,817.54x = 3,776,567,610.10
5. Step 5: Solve for x
   x = 3,776,567,610.10/64,817.54
6. Step 6: Final answer
   x = 58,264.59