Finding the Fourth Proportional to 70,402.17, 105,603.61 and 17,811.71

Step by Step Solution

1. Step 1: Write the proportion equation
   70,402.17 : 105,603.61 = 17,811.71 : x
2. Step 2: Convert to fraction form
   70,402.17/105,603.61 = 17,811.71/x
3. Step 3: Cross multiply
   70,402.17x = 105,603.61 × 17,811.71
4. Step 4: Simplify right side
   70,402.17x = 1,880,980,876.27
5. Step 5: Solve for x
   x = 1,880,980,876.27/70,402.17
6. Step 6: Final answer
   x = 26,717.65