Finding the Fourth Proportional to 118,266.80, 177,400.12 and 78,900.72

Step by Step Solution

1. Step 1: Write the proportion equation
   118,266.80 : 177,400.12 = 78,900.72 : x
2. Step 2: Convert to fraction form
   118,266.80/177,400.12 = 78,900.72/x
3. Step 3: Cross multiply
   118,266.80x = 177,400.12 × 78,900.72
4. Step 4: Simplify right side
   118,266.80x = 13,996,997,196.09
5. Step 5: Solve for x
   x = 13,996,997,196.09/118,266.80
6. Step 6: Final answer
   x = 118,351.03