Finding the Fourth Proportional to 144,648.74, 216,978.88 and 61,485.86

Step by Step Solution

1. Step 1: Write the proportion equation
   144,648.74 : 216,978.88 = 61,485.86 : x
2. Step 2: Convert to fraction form
   144,648.74/216,978.88 = 61,485.86/x
3. Step 3: Cross multiply
   144,648.74x = 216,978.88 × 61,485.86
4. Step 4: Simplify right side
   144,648.74x = 13,341,133,038.64
5. Step 5: Solve for x
   x = 13,341,133,038.64/144,648.74
6. Step 6: Final answer
   x = 92,231.24