Finding the Fourth Proportional to 76,775.34, 105,948.24 and 42,783.66

Step by Step Solution

1. Step 1: Write the proportion equation
   76,775.34 : 105,948.24 = 42,783.66 : x
2. Step 2: Convert to fraction form
   76,775.34/105,948.24 = 42,783.66/x
3. Step 3: Cross multiply
   76,775.34x = 105,948.24 × 42,783.66
4. Step 4: Simplify right side
   76,775.34x = 4,532,853,477.76
5. Step 5: Solve for x
   x = 4,532,853,477.76/76,775.34
6. Step 6: Final answer
   x = 59,040.49