Finding the Fourth Proportional to 140,918, 194,472.72 and 77,258.24

Step by Step Solution

1. Step 1: Write the proportion equation
   140,918 : 194,472.72 = 77,258.24 : x
2. Step 2: Convert to fraction form
   140,918/194,472.72 = 77,258.24/x
3. Step 3: Cross multiply
   140,918x = 194,472.72 × 77,258.24
4. Step 4: Simplify right side
   140,918x = 15,024,620,075.21
5. Step 5: Solve for x
   x = 15,024,620,075.21/140,918
6. Step 6: Final answer
   x = 106,619.59