Finding the Fourth Proportional to 156,651.70, 235,107.15 and 72,541.30

Step by Step Solution

1. Step 1: Write the proportion equation
   156,651.70 : 235,107.15 = 72,541.30 : x
2. Step 2: Convert to fraction form
   156,651.70/235,107.15 = 72,541.30/x
3. Step 3: Cross multiply
   156,651.70x = 235,107.15 × 72,541.30
4. Step 4: Simplify right side
   156,651.70x = 17,054,978,300.30
5. Step 5: Solve for x
   x = 17,054,978,300.30/156,651.70
6. Step 6: Final answer
   x = 108,871.96