Finding the Fourth Proportional to 76,766.00, 105,944.87 and 42,780.02

Step by Step Solution

1. Step 1: Write the proportion equation
   76,766.00 : 105,944.87 = 42,780.02 : x
2. Step 2: Convert to fraction form
   76,766.00/105,944.87 = 42,780.02/x
3. Step 3: Cross multiply
   76,766.00x = 105,944.87 × 42,780.02
4. Step 4: Simplify right side
   76,766.00x = 4,532,322,913.87
5. Step 5: Solve for x
   x = 4,532,322,913.87/76,766.00
6. Step 6: Final answer
   x = 59,040.76