Finding the Fourth Proportional to 76,758.18, 105,934.05 and 42,772.20

Step by Step Solution

1. Step 1: Write the proportion equation
   76,758.18 : 105,934.05 = 42,772.20 : x
2. Step 2: Convert to fraction form
   76,758.18/105,934.05 = 42,772.20/x
3. Step 3: Cross multiply
   76,758.18x = 105,934.05 × 42,772.20
4. Step 4: Simplify right side
   76,758.18x = 4,531,032,373.41
5. Step 5: Solve for x
   x = 4,531,032,373.41/76,758.18
6. Step 6: Final answer
   x = 59,029.96