Finding the Fourth Proportional to 102,001.30, 152,852.55 and 91,471.30

Step by Step Solution

1. Step 1: Write the proportion equation
   102,001.30 : 152,852.55 = 91,471.30 : x
2. Step 2: Convert to fraction form
   102,001.30/152,852.55 = 91,471.30/x
3. Step 3: Cross multiply
   102,001.30x = 152,852.55 × 91,471.30
4. Step 4: Simplify right side
   102,001.30x = 13,981,621,456.82
5. Step 5: Solve for x
   x = 13,981,621,456.82/102,001.30
6. Step 6: Final answer
   x = 137,072.97