Finding the Fourth Proportional to 60,570.50, 90,796.72 and 28,972.31

Step by Step Solution

1. Step 1: Write the proportion equation
   60,570.50 : 90,796.72 = 28,972.31 : x
2. Step 2: Convert to fraction form
   60,570.50/90,796.72 = 28,972.31/x
3. Step 3: Cross multiply
   60,570.50x = 90,796.72 × 28,972.31
4. Step 4: Simplify right side
   60,570.50x = 2,630,590,718.82
5. Step 5: Solve for x
   x = 2,630,590,718.82/60,570.50
6. Step 6: Final answer
   x = 43,430.23