Finding the Fourth Proportional to 152,565, 210,542.58 and 88,906.56

Step by Step Solution

1. Step 1: Write the proportion equation
   152,565 : 210,542.58 = 88,906.56 : x
2. Step 2: Convert to fraction form
   152,565/210,542.58 = 88,906.56/x
3. Step 3: Cross multiply
   152,565x = 210,542.58 × 88,906.56
4. Step 4: Simplify right side
   152,565x = 18,718,616,521.32
5. Step 5: Solve for x
   x = 18,718,616,521.32/152,565
6. Step 6: Final answer
   x = 122,692.73