Finding the Fourth Proportional to 76,304.09, 105,297.71 and 42,312.04

Step by Step Solution

1. Step 1: Write the proportion equation
   76,304.09 : 105,297.71 = 42,312.04 : x
2. Step 2: Convert to fraction form
   76,304.09/105,297.71 = 42,312.04/x
3. Step 3: Cross multiply
   76,304.09x = 105,297.71 × 42,312.04
4. Step 4: Simplify right side
   76,304.09x = 4,455,360,442.62
5. Step 5: Solve for x
   x = 4,455,360,442.62/76,304.09
6. Step 6: Final answer
   x = 58,389.53