Finding the Fourth Proportional to 127,931.30, 191,814.83 and 53,103.09

Step by Step Solution

1. Step 1: Write the proportion equation
   127,931.30 : 191,814.83 = 53,103.09 : x
2. Step 2: Convert to fraction form
   127,931.30/191,814.83 = 53,103.09/x
3. Step 3: Cross multiply
   127,931.30x = 191,814.83 × 53,103.09
4. Step 4: Simplify right side
   127,931.30x = 10,185,960,300.71
5. Step 5: Solve for x
   x = 10,185,960,300.71/127,931.30
6. Step 6: Final answer
   x = 79,620.55