Finding the Fourth Proportional to 72,090.95, 108,136.38 and 52,494.17

Step by Step Solution

1. Step 1: Write the proportion equation
   72,090.95 : 108,136.38 = 52,494.17 : x
2. Step 2: Convert to fraction form
   72,090.95/108,136.38 = 52,494.17/x
3. Step 3: Cross multiply
   72,090.95x = 108,136.38 × 52,494.17
4. Step 4: Simplify right side
   72,090.95x = 5,676,529,514.90
5. Step 5: Solve for x
   x = 5,676,529,514.90/72,090.95
6. Step 6: Final answer
   x = 78,741.22