Finding the Fourth Proportional to 130,979, 196,484.98 and 51,018.78

Step by Step Solution

1. Step 1: Write the proportion equation
   130,979 : 196,484.98 = 51,018.78 : x
2. Step 2: Convert to fraction form
   130,979/196,484.98 = 51,018.78/x
3. Step 3: Cross multiply
   130,979x = 196,484.98 × 51,018.78
4. Step 4: Simplify right side
   130,979x = 10,024,423,967.92
5. Step 5: Solve for x
   x = 10,024,423,967.92/130,979
6. Step 6: Final answer
   x = 76,534.59