Finding the Fourth Proportional to 134,541.72, 185,667.72 and 77,985.96

Step by Step Solution

1. Step 1: Write the proportion equation
   134,541.72 : 185,667.72 = 77,985.96 : x
2. Step 2: Convert to fraction form
   134,541.72/185,667.72 = 77,985.96/x
3. Step 3: Cross multiply
   134,541.72x = 185,667.72 × 77,985.96
4. Step 4: Simplify right side
   134,541.72x = 14,479,475,385.21
5. Step 5: Solve for x
   x = 14,479,475,385.21/134,541.72
6. Step 6: Final answer
   x = 107,620.71