Finding the Fourth Proportional to 76,763.57, 105,941.51 and 42,777.59

Step by Step Solution

1. Step 1: Write the proportion equation
   76,763.57 : 105,941.51 = 42,777.59 : x
2. Step 2: Convert to fraction form
   76,763.57/105,941.51 = 42,777.59/x
3. Step 3: Cross multiply
   76,763.57x = 105,941.51 × 42,777.59
4. Step 4: Simplify right side
   76,763.57x = 4,531,921,735.17
5. Step 5: Solve for x
   x = 4,531,921,735.17/76,763.57
6. Step 6: Final answer
   x = 59,037.41