Finding the Fourth Proportional to 56,005.92, 83,992.56 and 46,120.80

Step by Step Solution

1. Step 1: Write the proportion equation
   56,005.92 : 83,992.56 = 46,120.80 : x
2. Step 2: Convert to fraction form
   56,005.92/83,992.56 = 46,120.80/x
3. Step 3: Cross multiply
   56,005.92x = 83,992.56 × 46,120.80
4. Step 4: Simplify right side
   56,005.92x = 3,873,804,061.25
5. Step 5: Solve for x
   x = 3,873,804,061.25/56,005.92
6. Step 6: Final answer
   x = 69,167.76