Finding the Fourth Proportional to 76,554.34, 105,648.50 and 42,566.28

Step by Step Solution

1. Step 1: Write the proportion equation
   76,554.34 : 105,648.50 = 42,566.28 : x
2. Step 2: Convert to fraction form
   76,554.34/105,648.50 = 42,566.28/x
3. Step 3: Cross multiply
   76,554.34x = 105,648.50 × 42,566.28
4. Step 4: Simplify right side
   76,554.34x = 4,497,063,632.58
5. Step 5: Solve for x
   x = 4,497,063,632.58/76,554.34
6. Step 6: Final answer
   x = 58,743.42