Finding the Fourth Proportional to 127,980.77, 191,889 and 53,152.56

Step by Step Solution

1. Step 1: Write the proportion equation
   127,980.77 : 191,889 = 53,152.56 : x
2. Step 2: Convert to fraction form
   127,980.77/191,889 = 53,152.56/x
3. Step 3: Cross multiply
   127,980.77x = 191,889 × 53,152.56
4. Step 4: Simplify right side
   127,980.77x = 10,199,391,585.84
5. Step 5: Solve for x
   x = 10,199,391,585.84/127,980.77
6. Step 6: Final answer
   x = 79,694.72