Finding the Fourth Proportional to 105,761.83, 145,927.71 and 62,719.45

Step by Step Solution

1. Step 1: Write the proportion equation
   105,761.83 : 145,927.71 = 62,719.45 : x
2. Step 2: Convert to fraction form
   105,761.83/145,927.71 = 62,719.45/x
3. Step 3: Cross multiply
   105,761.83x = 145,927.71 × 62,719.45
4. Step 4: Simplify right side
   105,761.83x = 9,152,505,346.14
5. Step 5: Solve for x
   x = 9,152,505,346.14/105,761.83
6. Step 6: Final answer
   x = 86,538.84