Finding the Fourth Proportional to 142,058.18, 196,111.25 and 88,360.45

Step by Step Solution

1. Step 1: Write the proportion equation
   142,058.18 : 196,111.25 = 88,360.45 : x
2. Step 2: Convert to fraction form
   142,058.18/196,111.25 = 88,360.45/x
3. Step 3: Cross multiply
   142,058.18x = 196,111.25 × 88,360.45
4. Step 4: Simplify right side
   142,058.18x = 17,328,478,300.06
5. Step 5: Solve for x
   x = 17,328,478,300.06/142,058.18
6. Step 6: Final answer
   x = 121,981.56