Finding the Fourth Proportional to 118,090.72, 162,982.56 and 77,798.08

Step by Step Solution

1. Step 1: Write the proportion equation
   118,090.72 : 162,982.56 = 77,798.08 : x
2. Step 2: Convert to fraction form
   118,090.72/162,982.56 = 77,798.08/x
3. Step 3: Cross multiply
   118,090.72x = 162,982.56 × 77,798.08
4. Step 4: Simplify right side
   118,090.72x = 12,679,730,241.48
5. Step 5: Solve for x
   x = 12,679,730,241.48/118,090.72
6. Step 6: Final answer
   x = 107,372.79