Finding the Fourth Proportional to 76,634.37, 105,761.97 and 42,641.91

Step by Step Solution

1. Step 1: Write the proportion equation
   76,634.37 : 105,761.97 = 42,641.91 : x
2. Step 2: Convert to fraction form
   76,634.37/105,761.97 = 42,641.91/x
3. Step 3: Cross multiply
   76,634.37x = 105,761.97 × 42,641.91
4. Step 4: Simplify right side
   76,634.37x = 4,509,892,406.16
5. Step 5: Solve for x
   x = 4,509,892,406.16/76,634.37
6. Step 6: Final answer
   x = 58,849.47