Finding the Fourth Proportional to 76,524.82, 105,603.69 and 42,990.82

Step by Step Solution

1. Step 1: Write the proportion equation
   76,524.82 : 105,603.69 = 42,990.82 : x
2. Step 2: Convert to fraction form
   76,524.82/105,603.69 = 42,990.82/x
3. Step 3: Cross multiply
   76,524.82x = 105,603.69 × 42,990.82
4. Step 4: Simplify right side
   76,524.82x = 4,539,989,228.13
5. Step 5: Solve for x
   x = 4,539,989,228.13/76,524.82
6. Step 6: Final answer
   x = 59,327.02