Finding the Fourth Proportional to 258,112,155.01, 356,194,825.18 and 140,637,485.25

Step by Step Solution

1. Step 1: Write the proportion equation
   258,112,155.01 : 356,194,825.18 = 140,637,485.25 : x
2. Step 2: Convert to fraction form
   258,112,155.01/356,194,825.18 = 140,637,485.25/x
3. Step 3: Cross multiply
   258,112,155.01x = 356,194,825.18 × 140,637,485.25
4. Step 4: Simplify right side
   258,112,155.01x = 50,094,344,472,475,856
5. Step 5: Solve for x
   x = 50,094,344,472,475,856/258,112,155.01
6. Step 6: Final answer
   x = 194,079,757.58