Finding the Fourth Proportional to 123,903.10, 186,687.59 and 112,070.07

Step by Step Solution

1. Step 1: Write the proportion equation
   123,903.10 : 186,687.59 = 112,070.07 : x
2. Step 2: Convert to fraction form
   123,903.10/186,687.59 = 112,070.07/x
3. Step 3: Cross multiply
   123,903.10x = 186,687.59 × 112,070.07
4. Step 4: Simplify right side
   123,903.10x = 20,922,091,279.43
5. Step 5: Solve for x
   x = 20,922,091,279.43/123,903.10
6. Step 6: Final answer
   x = 168,858.50