Finding the Fourth Proportional to 58,386.96, 79,990.43 and 56,200.28

Step by Step Solution

1. Step 1: Write the proportion equation
   58,386.96 : 79,990.43 = 56,200.28 : x
2. Step 2: Convert to fraction form
   58,386.96/79,990.43 = 56,200.28/x
3. Step 3: Cross multiply
   58,386.96x = 79,990.43 × 56,200.28
4. Step 4: Simplify right side
   58,386.96x = 4,495,483,882.37
5. Step 5: Solve for x
   x = 4,495,483,882.37/58,386.96
6. Step 6: Final answer
   x = 76,994.66