Finding the Fourth Proportional to 56,646.32, 78,140.04 and 33,979.28

Step by Step Solution

1. Step 1: Write the proportion equation
   56,646.32 : 78,140.04 = 33,979.28 : x
2. Step 2: Convert to fraction form
   56,646.32/78,140.04 = 33,979.28/x
3. Step 3: Cross multiply
   56,646.32x = 78,140.04 × 33,979.28
4. Step 4: Simplify right side
   56,646.32x = 2,655,142,298.37
5. Step 5: Solve for x
   x = 2,655,142,298.37/56,646.32
6. Step 6: Final answer
   x = 46,872.28