Finding the Fourth Proportional to 172,399,061.10, 258,598,591.65 and 163,896,005.10

Step by Step Solution

1. Step 1: Write the proportion equation
   172,399,061.10 : 258,598,591.65 = 163,896,005.10 : x
2. Step 2: Convert to fraction form
   172,399,061.10/258,598,591.65 = 163,896,005.10/x
3. Step 3: Cross multiply
   172,399,061.10x = 258,598,591.65 × 163,896,005.10
4. Step 4: Simplify right side
   172,399,061.10x = 42,383,276,095,921,216
5. Step 5: Solve for x
   x = 42,383,276,095,921,216/172,399,061.10
6. Step 6: Final answer
   x = 245,844,007.65