Finding the Fourth Proportional to 57,627.86, 86,472.76 and 55,530.91

Step by Step Solution

1. Step 1: Write the proportion equation
   57,627.86 : 86,472.76 = 55,530.91 : x
2. Step 2: Convert to fraction form
   57,627.86/86,472.76 = 55,530.91/x
3. Step 3: Cross multiply
   57,627.86x = 86,472.76 × 55,530.91
4. Step 4: Simplify right side
   57,627.86x = 4,801,911,053.01
5. Step 5: Solve for x
   x = 4,801,911,053.01/57,627.86
6. Step 6: Final answer
   x = 83,326.21