Finding the Fourth Proportional to 86,595.72, 129,796.43 and 56,667.54

Step by Step Solution

1. Step 1: Write the proportion equation
   86,595.72 : 129,796.43 = 56,667.54 : x
2. Step 2: Convert to fraction form
   86,595.72/129,796.43 = 56,667.54/x
3. Step 3: Cross multiply
   86,595.72x = 129,796.43 × 56,667.54
4. Step 4: Simplify right side
   86,595.72x = 7,355,244,105.54
5. Step 5: Solve for x
   x = 7,355,244,105.54/86,595.72
6. Step 6: Final answer
   x = 84,937.73