Finding the Fourth Proportional to 90,287,105.72, 124,606,842.45 and 53,617,676.72

Step by Step Solution

1. Step 1: Write the proportion equation
   90,287,105.72 : 124,606,842.45 = 53,617,676.72 : x
2. Step 2: Convert to fraction form
   90,287,105.72/124,606,842.45 = 53,617,676.72/x
3. Step 3: Cross multiply
   90,287,105.72x = 124,606,842.45 × 53,617,676.72
4. Step 4: Simplify right side
   90,287,105.72x = 6,681,129,395,584,073
5. Step 5: Solve for x
   x = 6,681,129,395,584,073/90,287,105.72
6. Step 6: Final answer
   x = 73,998,710.47