Finding the Fourth Proportional to 76,205.94, 105,164.18 and 42,216.63

Step by Step Solution

1. Step 1: Write the proportion equation
   76,205.94 : 105,164.18 = 42,216.63 : x
2. Step 2: Convert to fraction form
   76,205.94/105,164.18 = 42,216.63/x
3. Step 3: Cross multiply
   76,205.94x = 105,164.18 × 42,216.63
4. Step 4: Simplify right side
   76,205.94x = 4,439,677,276.31
5. Step 5: Solve for x
   x = 4,439,677,276.31/76,205.94
6. Step 6: Final answer
   x = 58,258.94