Finding the Fourth Proportional to 90,556.02, 124,941.90 and 56,599.02

Step by Step Solution

1. Step 1: Write the proportion equation
   90,556.02 : 124,941.90 = 56,599.02 : x
2. Step 2: Convert to fraction form
   90,556.02/124,941.90 = 56,599.02/x
3. Step 3: Cross multiply
   90,556.02x = 124,941.90 × 56,599.02
4. Step 4: Simplify right side
   90,556.02x = 7,071,589,096.94
5. Step 5: Solve for x
   x = 7,071,589,096.94/90,556.02
6. Step 6: Final answer
   x = 78,090.77