Finding the Fourth Proportional to 57,709.36, 79,547.94 and 42,553.48

Step by Step Solution

1. Step 1: Write the proportion equation
   57,709.36 : 79,547.94 = 42,553.48 : x
2. Step 2: Convert to fraction form
   57,709.36/79,547.94 = 42,553.48/x
3. Step 3: Cross multiply
   57,709.36x = 79,547.94 × 42,553.48
4. Step 4: Simplify right side
   57,709.36x = 3,385,041,673.83
5. Step 5: Solve for x
   x = 3,385,041,673.83/57,709.36
6. Step 6: Final answer
   x = 58,656.72