Finding the Fourth Proportional to 42,851.05, 64,300.88 and 23,129.17

Step by Step Solution

1. Step 1: Write the proportion equation
   42,851.05 : 64,300.88 = 23,129.17 : x
2. Step 2: Convert to fraction form
   42,851.05/64,300.88 = 23,129.17/x
3. Step 3: Cross multiply
   42,851.05x = 64,300.88 × 23,129.17
4. Step 4: Simplify right side
   42,851.05x = 1,487,225,708.27
5. Step 5: Solve for x
   x = 1,487,225,708.27/42,851.05
6. Step 6: Final answer
   x = 34,706.87