Finding the Fourth Proportional to 156,940.38, 235,483.56 and 72,653.40

Step by Step Solution

1. Step 1: Write the proportion equation
   156,940.38 : 235,483.56 = 72,653.40 : x
2. Step 2: Convert to fraction form
   156,940.38/235,483.56 = 72,653.40/x
3. Step 3: Cross multiply
   156,940.38x = 235,483.56 × 72,653.40
4. Step 4: Simplify right side
   156,940.38x = 17,108,681,278.10
5. Step 5: Solve for x
   x = 17,108,681,278.10/156,940.38
6. Step 6: Final answer
   x = 109,013.89