Finding the Fourth Proportional to 76,306.47, 105,302.71 and 42,315.22

Step by Step Solution

1. Step 1: Write the proportion equation
   76,306.47 : 105,302.71 = 42,315.22 : x
2. Step 2: Convert to fraction form
   76,306.47/105,302.71 = 42,315.22/x
3. Step 3: Cross multiply
   76,306.47x = 105,302.71 × 42,315.22
4. Step 4: Simplify right side
   76,306.47x = 4,455,907,524.77
5. Step 5: Solve for x
   x = 4,455,907,524.77/76,306.47
6. Step 6: Final answer
   x = 58,394.89