Finding the Fourth Proportional to 51,043.90, 70,434.94 and 30,624.88

Step by Step Solution

1. Step 1: Write the proportion equation
   51,043.90 : 70,434.94 = 30,624.88 : x
2. Step 2: Convert to fraction form
   51,043.90/70,434.94 = 30,624.88/x
3. Step 3: Cross multiply
   51,043.90x = 70,434.94 × 30,624.88
4. Step 4: Simplify right side
   51,043.90x = 2,157,061,156.57
5. Step 5: Solve for x
   x = 2,157,061,156.57/51,043.90
6. Step 6: Final answer
   x = 42,258.95