Finding the Fourth Proportional to 42,789.60, 64,198.98 and 23,070.06

Step by Step Solution

1. Step 1: Write the proportion equation
   42,789.60 : 64,198.98 = 23,070.06 : x
2. Step 2: Convert to fraction form
   42,789.60/64,198.98 = 23,070.06/x
3. Step 3: Cross multiply
   42,789.60x = 64,198.98 × 23,070.06
4. Step 4: Simplify right side
   42,789.60x = 1,481,074,320.54
5. Step 5: Solve for x
   x = 1,481,074,320.54/42,789.60
6. Step 6: Final answer
   x = 34,612.95