Finding the Fourth Proportional to 144,499.06, 216,748.91 and 77,970.52

Step by Step Solution

1. Step 1: Write the proportion equation
   144,499.06 : 216,748.91 = 77,970.52 : x
2. Step 2: Convert to fraction form
   144,499.06/216,748.91 = 77,970.52/x
3. Step 3: Cross multiply
   144,499.06x = 216,748.91 × 77,970.52
4. Step 4: Simplify right side
   144,499.06x = 16,900,025,222.13
5. Step 5: Solve for x
   x = 16,900,025,222.13/144,499.06
6. Step 6: Final answer
   x = 116,955.95