Finding the Fourth Proportional to 252,667.88, 378,875.04 and 84,128.84

Step by Step Solution

1. Step 1: Write the proportion equation
   252,667.88 : 378,875.04 = 84,128.84 : x
2. Step 2: Convert to fraction form
   252,667.88/378,875.04 = 84,128.84/x
3. Step 3: Cross multiply
   252,667.88x = 378,875.04 × 84,128.84
4. Step 4: Simplify right side
   252,667.88x = 31,874,317,620.15
5. Step 5: Solve for x
   x = 31,874,317,620.15/252,667.88
6. Step 6: Final answer
   x = 126,151.05