Finding the Fourth Proportional to 101,222.64, 139,676.64 and 58,772.88

Step by Step Solution

1. Step 1: Write the proportion equation
   101,222.64 : 139,676.64 = 58,772.88 : x
2. Step 2: Convert to fraction form
   101,222.64/139,676.64 = 58,772.88/x
3. Step 3: Cross multiply
   101,222.64x = 139,676.64 × 58,772.88
4. Step 4: Simplify right side
   101,222.64x = 8,209,198,401.52
5. Step 5: Solve for x
   x = 8,209,198,401.52/101,222.64
6. Step 6: Final answer
   x = 81,100.42