Finding the Fourth Proportional to 57,630, 79,529.40 and 31,134

Step by Step Solution

1. Step 1: Write the proportion equation
   57,630 : 79,529.40 = 31,134 : x
2. Step 2: Convert to fraction form
   57,630/79,529.40 = 31,134/x
3. Step 3: Cross multiply
   57,630x = 79,529.40 × 31,134
4. Step 4: Simplify right side
   57,630x = 2,476,068,339.60
5. Step 5: Solve for x
   x = 2,476,068,339.60/57,630
6. Step 6: Final answer
   x = 42,964.92