Finding the Fourth Proportional to 88,918.56, 133,196.40 and 57,659.04

Step by Step Solution

1. Step 1: Write the proportion equation
   88,918.56 : 133,196.40 = 57,659.04 : x
2. Step 2: Convert to fraction form
   88,918.56/133,196.40 = 57,659.04/x
3. Step 3: Cross multiply
   88,918.56x = 133,196.40 × 57,659.04
4. Step 4: Simplify right side
   88,918.56x = 7,679,976,555.46
5. Step 5: Solve for x
   x = 7,679,976,555.46/88,918.56
6. Step 6: Final answer
   x = 86,370.91