Finding the Fourth Proportional to 100,139.72, 150,244.23 and 58,056.38

Step by Step Solution

1. Step 1: Write the proportion equation
   100,139.72 : 150,244.23 = 58,056.38 : x
2. Step 2: Convert to fraction form
   100,139.72/150,244.23 = 58,056.38/x
3. Step 3: Cross multiply
   100,139.72x = 150,244.23 × 58,056.38
4. Step 4: Simplify right side
   100,139.72x = 8,722,636,109.69
5. Step 5: Solve for x
   x = 8,722,636,109.69/100,139.72
6. Step 6: Final answer
   x = 87,104.66