Finding the Fourth Proportional to 113,109.86, 169,664.67 and 28,870.02

Step by Step Solution

1. Step 1: Write the proportion equation
   113,109.86 : 169,664.67 = 28,870.02 : x
2. Step 2: Convert to fraction form
   113,109.86/169,664.67 = 28,870.02/x
3. Step 3: Cross multiply
   113,109.86x = 169,664.67 × 28,870.02
4. Step 4: Simplify right side
   113,109.86x = 4,898,222,416.19
5. Step 5: Solve for x
   x = 4,898,222,416.19/113,109.86
6. Step 6: Final answer
   x = 43,305.00