Finding the Fourth Proportional to 56,914.72, 85,373.04 and 19,979.68

Step by Step Solution

1. Step 1: Write the proportion equation
   56,914.72 : 85,373.04 = 19,979.68 : x
2. Step 2: Convert to fraction form
   56,914.72/85,373.04 = 19,979.68/x
3. Step 3: Cross multiply
   56,914.72x = 85,373.04 × 19,979.68
4. Step 4: Simplify right side
   56,914.72x = 1,705,726,019.83
5. Step 5: Solve for x
   x = 1,705,726,019.83/56,914.72
6. Step 6: Final answer
   x = 29,969.86