Finding the Fourth Proportional to 172,774,992, 259,258,147.20 and 103,517,598.72

Step by Step Solution

1. Step 1: Write the proportion equation
   172,774,992 : 259,258,147.20 = 103,517,598.72 : x
2. Step 2: Convert to fraction form
   172,774,992/259,258,147.20 = 103,517,598.72/x
3. Step 3: Cross multiply
   172,774,992x = 259,258,147.20 × 103,517,598.72
4. Step 4: Simplify right side
   172,774,992x = 26,837,780,846,740,292
5. Step 5: Solve for x
   x = 26,837,780,846,740,292/172,774,992
6. Step 6: Final answer
   x = 155,333,711.99