Finding the Fourth Proportional to 49,830.72, 68,608.80 and 40,430.40

Step by Step Solution

1. Step 1: Write the proportion equation
   49,830.72 : 68,608.80 = 40,430.40 : x
2. Step 2: Convert to fraction form
   49,830.72/68,608.80 = 40,430.40/x
3. Step 3: Cross multiply
   49,830.72x = 68,608.80 × 40,430.40
4. Step 4: Simplify right side
   49,830.72x = 2,773,881,227.52
5. Step 5: Solve for x
   x = 2,773,881,227.52/49,830.72
6. Step 6: Final answer
   x = 55,666.09