Finding the Fourth Proportional to 113,066.19, 169,636.15 and 56,877.30

Step by Step Solution

1. Step 1: Write the proportion equation
   113,066.19 : 169,636.15 = 56,877.30 : x
2. Step 2: Convert to fraction form
   113,066.19/169,636.15 = 56,877.30/x
3. Step 3: Cross multiply
   113,066.19x = 169,636.15 × 56,877.30
4. Step 4: Simplify right side
   113,066.19x = 9,648,446,334.10
5. Step 5: Solve for x
   x = 9,648,446,334.10/113,066.19
6. Step 6: Final answer
   x = 85,334.49