Finding the Fourth Proportional to 105,427.98, 145,476.27 and 62,977.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,427.98 : 145,476.27 = 62,977.50 : x
2. Step 2: Convert to fraction form
   105,427.98/145,476.27 = 62,977.50/x
3. Step 3: Cross multiply
   105,427.98x = 145,476.27 × 62,977.50
4. Step 4: Simplify right side
   105,427.98x = 9,161,731,793.93
5. Step 5: Solve for x
   x = 9,161,731,793.93/105,427.98
6. Step 6: Final answer
   x = 86,900.38