Finding the Fourth Proportional to 112,387.70, 168,085.56 and 99,994.70

Step by Step Solution

1. Step 1: Write the proportion equation
   112,387.70 : 168,085.56 = 99,994.70 : x
2. Step 2: Convert to fraction form
   112,387.70/168,085.56 = 99,994.70/x
3. Step 3: Cross multiply
   112,387.70x = 168,085.56 × 99,994.70
4. Step 4: Simplify right side
   112,387.70x = 16,807,665,146.53
5. Step 5: Solve for x
   x = 16,807,665,146.53/112,387.70
6. Step 6: Final answer
   x = 149,550.75