Finding the Fourth Proportional to 209,510.58, 289,462.86 and 146,131.32

Step by Step Solution

1. Step 1: Write the proportion equation
   209,510.58 : 289,462.86 = 146,131.32 : x
2. Step 2: Convert to fraction form
   209,510.58/289,462.86 = 146,131.32/x
3. Step 3: Cross multiply
   209,510.58x = 289,462.86 × 146,131.32
4. Step 4: Simplify right side
   209,510.58x = 42,299,589,822.78
5. Step 5: Solve for x
   x = 42,299,589,822.78/209,510.58
6. Step 6: Final answer
   x = 201,897.15