Finding the Fourth Proportional to 42,853.05, 64,303.88 and 23,131.17

Step by Step Solution

1. Step 1: Write the proportion equation
   42,853.05 : 64,303.88 = 23,131.17 : x
2. Step 2: Convert to fraction form
   42,853.05/64,303.88 = 23,131.17/x
3. Step 3: Cross multiply
   42,853.05x = 64,303.88 × 23,131.17
4. Step 4: Simplify right side
   42,853.05x = 1,487,423,979.94
5. Step 5: Solve for x
   x = 1,487,423,979.94/42,853.05
6. Step 6: Final answer
   x = 34,709.87