Finding the Fourth Proportional to 99,004,288.72, 136,614,837.60 and 54,953,144.24

Step by Step Solution

1. Step 1: Write the proportion equation
   99,004,288.72 : 136,614,837.60 = 54,953,144.24 : x
2. Step 2: Convert to fraction form
   99,004,288.72/136,614,837.60 = 54,953,144.24/x
3. Step 3: Cross multiply
   99,004,288.72x = 136,614,837.60 × 54,953,144.24
4. Step 4: Simplify right side
   99,004,288.72x = 7,507,414,875,956,975
5. Step 5: Solve for x
   x = 7,507,414,875,956,975/99,004,288.72
6. Step 6: Final answer
   x = 75,829,188.54