Finding the Fourth Proportional to 99,922.86, 137,893.56 and 55,210.86

Step by Step Solution

1. Step 1: Write the proportion equation
   99,922.86 : 137,893.56 = 55,210.86 : x
2. Step 2: Convert to fraction form
   99,922.86/137,893.56 = 55,210.86/x
3. Step 3: Cross multiply
   99,922.86x = 137,893.56 × 55,210.86
4. Step 4: Simplify right side
   99,922.86x = 7,613,222,036.06
5. Step 5: Solve for x
   x = 7,613,222,036.06/99,922.86
6. Step 6: Final answer
   x = 76,190.99