Finding the Fourth Proportional to 105,062.01, 144,980.51 and 57,312.51

Step by Step Solution

1. Step 1: Write the proportion equation
   105,062.01 : 144,980.51 = 57,312.51 : x
2. Step 2: Convert to fraction form
   105,062.01/144,980.51 = 57,312.51/x
3. Step 3: Cross multiply
   105,062.01x = 144,980.51 × 57,312.51
4. Step 4: Simplify right side
   105,062.01x = 8,309,196,929.18
5. Step 5: Solve for x
   x = 8,309,196,929.18/105,062.01
6. Step 6: Final answer
   x = 79,088.50