Finding the Fourth Proportional to 79,069.19, 109,155.06 and 53,709.71

Step by Step Solution

1. Step 1: Write the proportion equation
   79,069.19 : 109,155.06 = 53,709.71 : x
2. Step 2: Convert to fraction form
   79,069.19/109,155.06 = 53,709.71/x
3. Step 3: Cross multiply
   79,069.19x = 109,155.06 × 53,709.71
4. Step 4: Simplify right side
   79,069.19x = 5,862,686,071.86
5. Step 5: Solve for x
   x = 5,862,686,071.86/79,069.19
6. Step 6: Final answer
   x = 74,146.28