Finding the Fourth Proportional to 86,719.10, 130,152.72 and 61,820.06

Step by Step Solution

1. Step 1: Write the proportion equation
   86,719.10 : 130,152.72 = 61,820.06 : x
2. Step 2: Convert to fraction form
   86,719.10/130,152.72 = 61,820.06/x
3. Step 3: Cross multiply
   86,719.10x = 130,152.72 × 61,820.06
4. Step 4: Simplify right side
   86,719.10x = 8,046,048,959.56
5. Step 5: Solve for x
   x = 8,046,048,959.56/86,719.10
6. Step 6: Final answer
   x = 92,782.89