Finding the Fourth Proportional to 58,300.79, 80,260.53 and 55,622.72

Step by Step Solution

1. Step 1: Write the proportion equation
   58,300.79 : 80,260.53 = 55,622.72 : x
2. Step 2: Convert to fraction form
   58,300.79/80,260.53 = 55,622.72/x
3. Step 3: Cross multiply
   58,300.79x = 80,260.53 × 55,622.72
4. Step 4: Simplify right side
   58,300.79x = 4,464,308,987.24
5. Step 5: Solve for x
   x = 4,464,308,987.24/58,300.79
6. Step 6: Final answer
   x = 76,573.73