Finding the Fourth Proportional to 93,322.56, 139,760.82 and 51,139.20

Step by Step Solution

1. Step 1: Write the proportion equation
   93,322.56 : 139,760.82 = 51,139.20 : x
2. Step 2: Convert to fraction form
   93,322.56/139,760.82 = 51,139.20/x
3. Step 3: Cross multiply
   93,322.56x = 139,760.82 × 51,139.20
4. Step 4: Simplify right side
   93,322.56x = 7,147,256,526.14
5. Step 5: Solve for x
   x = 7,147,256,526.14/93,322.56
6. Step 6: Final answer
   x = 76,586.59