Finding the Fourth Proportional to 76,884.78, 106,097.78 and 42,892.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,884.78 : 106,097.78 = 42,892.72 : x
2. Step 2: Convert to fraction form
   76,884.78/106,097.78 = 42,892.72/x
3. Step 3: Cross multiply
   76,884.78x = 106,097.78 × 42,892.72
4. Step 4: Simplify right side
   76,884.78x = 4,550,822,370.16
5. Step 5: Solve for x
   x = 4,550,822,370.16/76,884.78
6. Step 6: Final answer
   x = 59,190.16