Finding the Fourth Proportional to 71,973,404.19, 99,219,993.53 and 51,310,978.11

Step by Step Solution

1. Step 1: Write the proportion equation
   71,973,404.19 : 99,219,993.53 = 51,310,978.11 : x
2. Step 2: Convert to fraction form
   71,973,404.19/99,219,993.53 = 51,310,978.11/x
3. Step 3: Cross multiply
   71,973,404.19x = 99,219,993.53 × 51,310,978.11
4. Step 4: Simplify right side
   71,973,404.19x = 5,091,074,915,835,617
5. Step 5: Solve for x
   x = 5,091,074,915,835,617/71,973,404.19
6. Step 6: Final answer
   x = 70,735,502.55