Finding the Fourth Proportional to 123,443.46, 184,848.93 and 85,440.06

Step by Step Solution

1. Step 1: Write the proportion equation
   123,443.46 : 184,848.93 = 85,440.06 : x
2. Step 2: Convert to fraction form
   123,443.46/184,848.93 = 85,440.06/x
3. Step 3: Cross multiply
   123,443.46x = 184,848.93 × 85,440.06
4. Step 4: Simplify right side
   123,443.46x = 15,793,503,670.14
5. Step 5: Solve for x
   x = 15,793,503,670.14/123,443.46
6. Step 6: Final answer
   x = 127,941.19