Finding the Fourth Proportional to 51,446.90, 70,901.98 and 42,439.70

Step by Step Solution

1. Step 1: Write the proportion equation
   51,446.90 : 70,901.98 = 42,439.70 : x
2. Step 2: Convert to fraction form
   51,446.90/70,901.98 = 42,439.70/x
3. Step 3: Cross multiply
   51,446.90x = 70,901.98 × 42,439.70
4. Step 4: Simplify right side
   51,446.90x = 3,009,058,300.00
5. Step 5: Solve for x
   x = 3,009,058,300.00/51,446.90
6. Step 6: Final answer
   x = 58,488.63