Finding the Fourth Proportional to 89,784.05, 134,676.68 and 42,894.77

Step by Step Solution

1. Step 1: Write the proportion equation
   89,784.05 : 134,676.68 = 42,894.77 : x
2. Step 2: Convert to fraction form
   89,784.05/134,676.68 = 42,894.77/x
3. Step 3: Cross multiply
   89,784.05x = 134,676.68 × 42,894.77
4. Step 4: Simplify right side
   89,784.05x = 5,776,924,325.11
5. Step 5: Solve for x
   x = 5,776,924,325.11/89,784.05
6. Step 6: Final answer
   x = 64,342.44