Finding the Fourth Proportional to 106,443.72, 146,889.18 and 58,697.06

Step by Step Solution

1. Step 1: Write the proportion equation
   106,443.72 : 146,889.18 = 58,697.06 : x
2. Step 2: Convert to fraction form
   106,443.72/146,889.18 = 58,697.06/x
3. Step 3: Cross multiply
   106,443.72x = 146,889.18 × 58,697.06
4. Step 4: Simplify right side
   106,443.72x = 8,621,963,011.81
5. Step 5: Solve for x
   x = 8,621,963,011.81/106,443.72
6. Step 6: Final answer
   x = 81,000.20