Finding the Fourth Proportional to 156,105.02, 215,424.88 and 84,485.04

Step by Step Solution

1. Step 1: Write the proportion equation
   156,105.02 : 215,424.88 = 84,485.04 : x
2. Step 2: Convert to fraction form
   156,105.02/215,424.88 = 84,485.04/x
3. Step 3: Cross multiply
   156,105.02x = 215,424.88 × 84,485.04
4. Step 4: Simplify right side
   156,105.02x = 18,200,179,603.80
5. Step 5: Solve for x
   x = 18,200,179,603.80/156,105.02
6. Step 6: Final answer
   x = 116,589.33