Finding the Fourth Proportional to 72,146,606.56, 99,559,648.74 and 39,106,146.30

Step by Step Solution

1. Step 1: Write the proportion equation
   72,146,606.56 : 99,559,648.74 = 39,106,146.30 : x
2. Step 2: Convert to fraction form
   72,146,606.56/99,559,648.74 = 39,106,146.30/x
3. Step 3: Cross multiply
   72,146,606.56x = 99,559,648.74 × 39,106,146.30
4. Step 4: Simplify right side
   72,146,606.56x = 3,893,394,188,509,722
5. Step 5: Solve for x
   x = 3,893,394,188,509,722/72,146,606.56
6. Step 6: Final answer
   x = 53,965,035.56