Finding the Fourth Proportional to 88,835.30, 133,058.55 and 77,171.30

Step by Step Solution

1. Step 1: Write the proportion equation
   88,835.30 : 133,058.55 = 77,171.30 : x
2. Step 2: Convert to fraction form
   88,835.30/133,058.55 = 77,171.30/x
3. Step 3: Cross multiply
   88,835.30x = 133,058.55 × 77,171.30
4. Step 4: Simplify right side
   88,835.30x = 10,268,301,279.62
5. Step 5: Solve for x
   x = 10,268,301,279.62/88,835.30
6. Step 6: Final answer
   x = 115,588.07