Finding the Fourth Proportional to 76,775.56, 105,953.53 and 42,784.09

Step by Step Solution

1. Step 1: Write the proportion equation
   76,775.56 : 105,953.53 = 42,784.09 : x
2. Step 2: Convert to fraction form
   76,775.56/105,953.53 = 42,784.09/x
3. Step 3: Cross multiply
   76,775.56x = 105,953.53 × 42,784.09
4. Step 4: Simplify right side
   76,775.56x = 4,533,125,363.34
5. Step 5: Solve for x
   x = 4,533,125,363.34/76,775.56
6. Step 6: Final answer
   x = 59,043.86