Finding the Fourth Proportional to 142,870.44, 214,261.91 and 98,780.52

Step by Step Solution

1. Step 1: Write the proportion equation
   142,870.44 : 214,261.91 = 98,780.52 : x
2. Step 2: Convert to fraction form
   142,870.44/214,261.91 = 98,780.52/x
3. Step 3: Cross multiply
   142,870.44x = 214,261.91 × 98,780.52
4. Step 4: Simplify right side
   142,870.44x = 21,164,902,392.09
5. Step 5: Solve for x
   x = 21,164,902,392.09/142,870.44
6. Step 6: Final answer
   x = 148,140.53