Finding the Fourth Proportional to 102,521.30, 153,923.59 and 70,853.33

Step by Step Solution

1. Step 1: Write the proportion equation
   102,521.30 : 153,923.59 = 70,853.33 : x
2. Step 2: Convert to fraction form
   102,521.30/153,923.59 = 70,853.33/x
3. Step 3: Cross multiply
   102,521.30x = 153,923.59 × 70,853.33
4. Step 4: Simplify right side
   102,521.30x = 10,905,999,390.43
5. Step 5: Solve for x
   x = 10,905,999,390.43/102,521.30
6. Step 6: Final answer
   x = 106,377.89