Finding the Fourth Proportional to 113,066.69, 169,636.90 and 56,877.80

Step by Step Solution

1. Step 1: Write the proportion equation
   113,066.69 : 169,636.90 = 56,877.80 : x
2. Step 2: Convert to fraction form
   113,066.69/169,636.90 = 56,877.80/x
3. Step 3: Cross multiply
   113,066.69x = 169,636.90 × 56,877.80
4. Step 4: Simplify right side
   113,066.69x = 9,648,573,952.72
5. Step 5: Solve for x
   x = 9,648,573,952.72/113,066.69
6. Step 6: Final answer
   x = 85,335.25