Finding the Fourth Proportional to 72,465.63, 99,968.54 and 51,256.59

Step by Step Solution

1. Step 1: Write the proportion equation
   72,465.63 : 99,968.54 = 51,256.59 : x
2. Step 2: Convert to fraction form
   72,465.63/99,968.54 = 51,256.59/x
3. Step 3: Cross multiply
   72,465.63x = 99,968.54 × 51,256.59
4. Step 4: Simplify right side
   72,465.63x = 5,124,046,467.68
5. Step 5: Solve for x
   x = 5,124,046,467.68/72,465.63
6. Step 6: Final answer
   x = 70,710.02