Finding the Fourth Proportional to 113,887, 170,680.38 and 99,025.12

Step by Step Solution

1. Step 1: Write the proportion equation
   113,887 : 170,680.38 = 99,025.12 : x
2. Step 2: Convert to fraction form
   113,887/170,680.38 = 99,025.12/x
3. Step 3: Cross multiply
   113,887x = 170,680.38 × 99,025.12
4. Step 4: Simplify right side
   113,887x = 16,901,645,111.15
5. Step 5: Solve for x
   x = 16,901,645,111.15/113,887
6. Step 6: Final answer
   x = 148,407.15