Finding the Fourth Proportional to 85,507,106.72, 128,214,520.16 and 38,795,097.60

Step by Step Solution

1. Step 1: Write the proportion equation
   85,507,106.72 : 128,214,520.16 = 38,795,097.60 : x
2. Step 2: Convert to fraction form
   85,507,106.72/128,214,520.16 = 38,795,097.60/x
3. Step 3: Cross multiply
   85,507,106.72x = 128,214,520.16 × 38,795,097.60
4. Step 4: Simplify right side
   85,507,106.72x = 4,974,094,823,150,392
5. Step 5: Solve for x
   x = 4,974,094,823,150,392/85,507,106.72
6. Step 6: Final answer
   x = 58,171,712.44