Finding the Fourth Proportional to 216,698.01, 325,061.27 and 56,777.86

Step by Step Solution

1. Step 1: Write the proportion equation
   216,698.01 : 325,061.27 = 56,777.86 : x
2. Step 2: Convert to fraction form
   216,698.01/325,061.27 = 56,777.86/x
3. Step 3: Cross multiply
   216,698.01x = 325,061.27 × 56,777.86
4. Step 4: Simplify right side
   216,698.01x = 18,456,282,105.74
5. Step 5: Solve for x
   x = 18,456,282,105.74/216,698.01
6. Step 6: Final answer
   x = 85,170.52