Finding the Fourth Proportional to 111,963.01, 154,510.64 and 60,978.12

Step by Step Solution

1. Step 1: Write the proportion equation
   111,963.01 : 154,510.64 = 60,978.12 : x
2. Step 2: Convert to fraction form
   111,963.01/154,510.64 = 60,978.12/x
3. Step 3: Cross multiply
   111,963.01x = 154,510.64 × 60,978.12
4. Step 4: Simplify right side
   111,963.01x = 9,421,767,691.56
5. Step 5: Solve for x
   x = 9,421,767,691.56/111,963.01
6. Step 6: Final answer
   x = 84,150.72