Finding the Fourth Proportional to 145,994, 201,471.72 and 78,926

Step by Step Solution

1. Step 1: Write the proportion equation
   145,994 : 201,471.72 = 78,926 : x
2. Step 2: Convert to fraction form
   145,994/201,471.72 = 78,926/x
3. Step 3: Cross multiply
   145,994x = 201,471.72 × 78,926
4. Step 4: Simplify right side
   145,994x = 15,901,356,972.72
5. Step 5: Solve for x
   x = 15,901,356,972.72/145,994
6. Step 6: Final answer
   x = 108,917.88