Finding the Fourth Proportional to 72,145.76, 99,480.12 and 46,618.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,145.76 : 99,480.12 = 46,618.52 : x
2. Step 2: Convert to fraction form
   72,145.76/99,480.12 = 46,618.52/x
3. Step 3: Cross multiply
   72,145.76x = 99,480.12 × 46,618.52
4. Step 4: Simplify right side
   72,145.76x = 4,637,615,963.82
5. Step 5: Solve for x
   x = 4,637,615,963.82/72,145.76
6. Step 6: Final answer
   x = 64,281.20