Finding the Fourth Proportional to 76,506.32, 105,583.56 and 42,974.48

Step by Step Solution

1. Step 1: Write the proportion equation
   76,506.32 : 105,583.56 = 42,974.48 : x
2. Step 2: Convert to fraction form
   76,506.32/105,583.56 = 42,974.48/x
3. Step 3: Cross multiply
   76,506.32x = 105,583.56 × 42,974.48
4. Step 4: Simplify right side
   76,506.32x = 4,537,398,587.55
5. Step 5: Solve for x
   x = 4,537,398,587.55/76,506.32
6. Step 6: Final answer
   x = 59,307.50