Finding the Fourth Proportional to 79,115.51, 109,178.55 and 45,123.09

Step by Step Solution

1. Step 1: Write the proportion equation
   79,115.51 : 109,178.55 = 45,123.09 : x
2. Step 2: Convert to fraction form
   79,115.51/109,178.55 = 45,123.09/x
3. Step 3: Cross multiply
   79,115.51x = 109,178.55 × 45,123.09
4. Step 4: Simplify right side
   79,115.51x = 4,926,473,537.72
5. Step 5: Solve for x
   x = 4,926,473,537.72/79,115.51
6. Step 6: Final answer
   x = 62,269.38