Finding the Fourth Proportional to 105,624, 145,761.12 and 60,912

Step by Step Solution

1. Step 1: Write the proportion equation
   105,624 : 145,761.12 = 60,912 : x
2. Step 2: Convert to fraction form
   105,624/145,761.12 = 60,912/x
3. Step 3: Cross multiply
   105,624x = 145,761.12 × 60,912
4. Step 4: Simplify right side
   105,624x = 8,878,601,341.44
5. Step 5: Solve for x
   x = 8,878,601,341.44/105,624
6. Step 6: Final answer
   x = 84,058.56