Finding the Fourth Proportional to 31,407.60, 43,341.72 and 17,977.98

Step by Step Solution

1. Step 1: Write the proportion equation
   31,407.60 : 43,341.72 = 17,977.98 : x
2. Step 2: Convert to fraction form
   31,407.60/43,341.72 = 17,977.98/x
3. Step 3: Cross multiply
   31,407.60x = 43,341.72 × 17,977.98
4. Step 4: Simplify right side
   31,407.60x = 779,196,575.33
5. Step 5: Solve for x
   x = 779,196,575.33/31,407.60
6. Step 6: Final answer
   x = 24,809.17