Finding the Fourth Proportional to 142,973.60, 214,314.60 and 83,778.80

Step by Step Solution

1. Step 1: Write the proportion equation
   142,973.60 : 214,314.60 = 83,778.80 : x
2. Step 2: Convert to fraction form
   142,973.60/214,314.60 = 83,778.80/x
3. Step 3: Cross multiply
   142,973.60x = 214,314.60 × 83,778.80
4. Step 4: Simplify right side
   142,973.60x = 17,955,020,010.48
5. Step 5: Solve for x
   x = 17,955,020,010.48/142,973.60
6. Step 6: Final answer
   x = 125,582.77