Finding the Fourth Proportional to 86,196.72, 129,163.08 and 58,012.56

Step by Step Solution

1. Step 1: Write the proportion equation
   86,196.72 : 129,163.08 = 58,012.56 : x
2. Step 2: Convert to fraction form
   86,196.72/129,163.08 = 58,012.56/x
3. Step 3: Cross multiply
   86,196.72x = 129,163.08 × 58,012.56
4. Step 4: Simplify right side
   86,196.72x = 7,493,080,928.28
5. Step 5: Solve for x
   x = 7,493,080,928.28/86,196.72
6. Step 6: Final answer
   x = 86,930.00