Finding the Fourth Proportional to 56,133, 77,435.60 and 39,172.82

Step by Step Solution

1. Step 1: Write the proportion equation
   56,133 : 77,435.60 = 39,172.82 : x
2. Step 2: Convert to fraction form
   56,133/77,435.60 = 39,172.82/x
3. Step 3: Cross multiply
   56,133x = 77,435.60 × 39,172.82
4. Step 4: Simplify right side
   56,133x = 3,033,370,237.35
5. Step 5: Solve for x
   x = 3,033,370,237.35/56,133
6. Step 6: Final answer
   x = 54,038.98