Finding the Fourth Proportional to 71,973,399.69, 99,219,987.32 and 51,310,973.61

Step by Step Solution

1. Step 1: Write the proportion equation
   71,973,399.69 : 99,219,987.32 = 51,310,973.61 : x
2. Step 2: Convert to fraction form
   71,973,399.69/99,219,987.32 = 51,310,973.61/x
3. Step 3: Cross multiply
   71,973,399.69x = 99,219,987.32 × 51,310,973.61
4. Step 4: Simplify right side
   71,973,399.69x = 5,091,074,150,704,500
5. Step 5: Solve for x
   x = 5,091,074,150,704,500/71,973,399.69
6. Step 6: Final answer
   x = 70,735,496.34