Finding the Fourth Proportional to 42,179.67, 63,139.20 and 23,156.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,179.67 : 63,139.20 = 23,156.72 : x
2. Step 2: Convert to fraction form
   42,179.67/63,139.20 = 23,156.72/x
3. Step 3: Cross multiply
   42,179.67x = 63,139.20 × 23,156.72
4. Step 4: Simplify right side
   42,179.67x = 1,462,096,609.66
5. Step 5: Solve for x
   x = 1,462,096,609.66/42,179.67
6. Step 6: Final answer
   x = 34,663.54