Finding the Fourth Proportional to 163,061.06, 225,026.56 and 98,521.31

Step by Step Solution

1. Step 1: Write the proportion equation
   163,061.06 : 225,026.56 = 98,521.31 : x
2. Step 2: Convert to fraction form
   163,061.06/225,026.56 = 98,521.31/x
3. Step 3: Cross multiply
   163,061.06x = 225,026.56 × 98,521.31
4. Step 4: Simplify right side
   163,061.06x = 22,169,911,475.99
5. Step 5: Solve for x
   x = 22,169,911,475.99/163,061.06
6. Step 6: Final answer
   x = 135,960.80