Finding the Fourth Proportional to 76,577.82, 114,851.59 and 72,780.29

Step by Step Solution

1. Step 1: Write the proportion equation
   76,577.82 : 114,851.59 = 72,780.29 : x
2. Step 2: Convert to fraction form
   76,577.82/114,851.59 = 72,780.29/x
3. Step 3: Cross multiply
   76,577.82x = 114,851.59 × 72,780.29
4. Step 4: Simplify right side
   76,577.82x = 8,358,931,740.03
5. Step 5: Solve for x
   x = 8,358,931,740.03/76,577.82
6. Step 6: Final answer
   x = 109,156.04