Finding the Fourth Proportional to 76,753.45, 105,912.52 and 42,758.47

Step by Step Solution

1. Step 1: Write the proportion equation
   76,753.45 : 105,912.52 = 42,758.47 : x
2. Step 2: Convert to fraction form
   76,753.45/105,912.52 = 42,758.47/x
3. Step 3: Cross multiply
   76,753.45x = 105,912.52 × 42,758.47
4. Step 4: Simplify right side
   76,753.45x = 4,528,657,309.04
5. Step 5: Solve for x
   x = 4,528,657,309.04/76,753.45
6. Step 6: Final answer
   x = 59,002.65