Finding the Fourth Proportional to 113,205.02, 156,222.81 and 62,221.05

Step by Step Solution

1. Step 1: Write the proportion equation
   113,205.02 : 156,222.81 = 62,221.05 : x
2. Step 2: Convert to fraction form
   113,205.02/156,222.81 = 62,221.05/x
3. Step 3: Cross multiply
   113,205.02x = 156,222.81 × 62,221.05
4. Step 4: Simplify right side
   113,205.02x = 9,720,347,272.15
5. Step 5: Solve for x
   x = 9,720,347,272.15/113,205.02
6. Step 6: Final answer
   x = 85,864.99