Finding the Fourth Proportional to 76,291.50, 105,288.75 and 42,763.98

Step by Step Solution

1. Step 1: Write the proportion equation
   76,291.50 : 105,288.75 = 42,763.98 : x
2. Step 2: Convert to fraction form
   76,291.50/105,288.75 = 42,763.98/x
3. Step 3: Cross multiply
   76,291.50x = 105,288.75 × 42,763.98
4. Step 4: Simplify right side
   76,291.50x = 4,502,565,999.23
5. Step 5: Solve for x
   x = 4,502,565,999.23/76,291.50
6. Step 6: Final answer
   x = 59,017.92