Finding the Fourth Proportional to 64,145.72, 88,463.58 and 53,426.18

Step by Step Solution

1. Step 1: Write the proportion equation
   64,145.72 : 88,463.58 = 53,426.18 : x
2. Step 2: Convert to fraction form
   64,145.72/88,463.58 = 53,426.18/x
3. Step 3: Cross multiply
   64,145.72x = 88,463.58 × 53,426.18
4. Step 4: Simplify right side
   64,145.72x = 4,726,271,148.52
5. Step 5: Solve for x
   x = 4,726,271,148.52/64,145.72
6. Step 6: Final answer
   x = 73,680.23