Finding the Fourth Proportional to 123,916.45, 185,770.18 and 53,742.91

Step by Step Solution

1. Step 1: Write the proportion equation
   123,916.45 : 185,770.18 = 53,742.91 : x
2. Step 2: Convert to fraction form
   123,916.45/185,770.18 = 53,742.91/x
3. Step 3: Cross multiply
   123,916.45x = 185,770.18 × 53,742.91
4. Step 4: Simplify right side
   123,916.45x = 9,983,830,064.42
5. Step 5: Solve for x
   x = 9,983,830,064.42/123,916.45
6. Step 6: Final answer
   x = 80,569.05