Finding the Fourth Proportional to 103,636.06, 155,456.72 and 77,506.68

Step by Step Solution

1. Step 1: Write the proportion equation
   103,636.06 : 155,456.72 = 77,506.68 : x
2. Step 2: Convert to fraction form
   103,636.06/155,456.72 = 77,506.68/x
3. Step 3: Cross multiply
   103,636.06x = 155,456.72 × 77,506.68
4. Step 4: Simplify right side
   103,636.06x = 12,048,934,250.89
5. Step 5: Solve for x
   x = 12,048,934,250.89/103,636.06
6. Step 6: Final answer
   x = 116,261.99