Finding the Fourth Proportional to 153,978.96, 210,947.64 and 148,222.28

Step by Step Solution

1. Step 1: Write the proportion equation
   153,978.96 : 210,947.64 = 148,222.28 : x
2. Step 2: Convert to fraction form
   153,978.96/210,947.64 = 148,222.28/x
3. Step 3: Cross multiply
   153,978.96x = 210,947.64 × 148,222.28
4. Step 4: Simplify right side
   153,978.96x = 31,267,140,161.42
5. Step 5: Solve for x
   x = 31,267,140,161.42/153,978.96
6. Step 6: Final answer
   x = 203,061.12