Finding the Fourth Proportional to 39,977.31, 55,168.34 and 22,071.94

Step by Step Solution

1. Step 1: Write the proportion equation
   39,977.31 : 55,168.34 = 22,071.94 : x
2. Step 2: Convert to fraction form
   39,977.31/55,168.34 = 22,071.94/x
3. Step 3: Cross multiply
   39,977.31x = 55,168.34 × 22,071.94
4. Step 4: Simplify right side
   39,977.31x = 1,217,672,042.10
5. Step 5: Solve for x
   x = 1,217,672,042.10/39,977.31
6. Step 6: Final answer
   x = 30,459.08