Finding the Fourth Proportional to 89,499.72, 134,782.32 and 77,952.36

Step by Step Solution

1. Step 1: Write the proportion equation
   89,499.72 : 134,782.32 = 77,952.36 : x
2. Step 2: Convert to fraction form
   89,499.72/134,782.32 = 77,952.36/x
3. Step 3: Cross multiply
   89,499.72x = 134,782.32 × 77,952.36
4. Step 4: Simplify right side
   89,499.72x = 10,506,599,930.28
5. Step 5: Solve for x
   x = 10,506,599,930.28/89,499.72
6. Step 6: Final answer
   x = 117,392.55