Finding the Fourth Proportional to 112,591.42, 155,374.82 and 61,603.55

Step by Step Solution

1. Step 1: Write the proportion equation
   112,591.42 : 155,374.82 = 61,603.55 : x
2. Step 2: Convert to fraction form
   112,591.42/155,374.82 = 61,603.55/x
3. Step 3: Cross multiply
   112,591.42x = 155,374.82 × 61,603.55
4. Step 4: Simplify right side
   112,591.42x = 9,571,641,441.89
5. Step 5: Solve for x
   x = 9,571,641,441.89/112,591.42
6. Step 6: Final answer
   x = 85,012.18