Finding the Fourth Proportional to 40,480,828.72, 60,721,194.21 and 13,187,076.96

Step by Step Solution

1. Step 1: Write the proportion equation
   40,480,828.72 : 60,721,194.21 = 13,187,076.96 : x
2. Step 2: Convert to fraction form
   40,480,828.72/60,721,194.21 = 13,187,076.96/x
3. Step 3: Cross multiply
   40,480,828.72x = 60,721,194.21 × 13,187,076.96
4. Step 4: Simplify right side
   40,480,828.72x = 800,735,061,150,376.50
5. Step 5: Solve for x
   x = 800,735,061,150,376.50/40,480,828.72
6. Step 6: Final answer
   x = 19,780,599.52