Finding the Fourth Proportional to 123,051.34, 169,823.55 and 75,336.40

Step by Step Solution

1. Step 1: Write the proportion equation
   123,051.34 : 169,823.55 = 75,336.40 : x
2. Step 2: Convert to fraction form
   123,051.34/169,823.55 = 75,336.40/x
3. Step 3: Cross multiply
   123,051.34x = 169,823.55 × 75,336.40
4. Step 4: Simplify right side
   123,051.34x = 12,793,894,892.22
5. Step 5: Solve for x
   x = 12,793,894,892.22/123,051.34
6. Step 6: Final answer
   x = 103,972.01