Finding the Fourth Proportional to 138,111.12, 190,607.98 and 84,427.56

Step by Step Solution

1. Step 1: Write the proportion equation
   138,111.12 : 190,607.98 = 84,427.56 : x
2. Step 2: Convert to fraction form
   138,111.12/190,607.98 = 84,427.56/x
3. Step 3: Cross multiply
   138,111.12x = 190,607.98 × 84,427.56
4. Step 4: Simplify right side
   138,111.12x = 16,092,566,667.93
5. Step 5: Solve for x
   x = 16,092,566,667.93/138,111.12
6. Step 6: Final answer
   x = 116,518.98