Finding the Fourth Proportional to 28,145,908.72, 42,246,096.83 and 13,583,079.82

Step by Step Solution

1. Step 1: Write the proportion equation
   28,145,908.72 : 42,246,096.83 = 13,583,079.82 : x
2. Step 2: Convert to fraction form
   28,145,908.72/42,246,096.83 = 13,583,079.82/x
3. Step 3: Cross multiply
   28,145,908.72x = 42,246,096.83 × 13,583,079.82
4. Step 4: Simplify right side
   28,145,908.72x = 573,832,105,204,133.88
5. Step 5: Solve for x
   x = 573,832,105,204,133.88/28,145,908.72
6. Step 6: Final answer
   x = 20,387,762.60