Finding the Fourth Proportional to 144,192.65, 216,255.69 and 42,970.10

Step by Step Solution

1. Step 1: Write the proportion equation
   144,192.65 : 216,255.69 = 42,970.10 : x
2. Step 2: Convert to fraction form
   144,192.65/216,255.69 = 42,970.10/x
3. Step 3: Cross multiply
   144,192.65x = 216,255.69 × 42,970.10
4. Step 4: Simplify right side
   144,192.65x = 9,292,527,543.59
5. Step 5: Solve for x
   x = 9,292,527,543.59/144,192.65
6. Step 6: Final answer
   x = 64,445.23