Finding the Fourth Proportional to 113,109.13, 169,663.60 and 28,869.31

Step by Step Solution

1. Step 1: Write the proportion equation
   113,109.13 : 169,663.60 = 28,869.31 : x
2. Step 2: Convert to fraction form
   113,109.13/169,663.60 = 28,869.31/x
3. Step 3: Cross multiply
   113,109.13x = 169,663.60 × 28,869.31
4. Step 4: Simplify right side
   113,109.13x = 4,898,071,064.12
5. Step 5: Solve for x
   x = 4,898,071,064.12/113,109.13
6. Step 6: Final answer
   x = 43,303.94