Finding the Fourth Proportional to 89,157.60, 123,120.72 and 57,381.84

Step by Step Solution

1. Step 1: Write the proportion equation
   89,157.60 : 123,120.72 = 57,381.84 : x
2. Step 2: Convert to fraction form
   89,157.60/123,120.72 = 57,381.84/x
3. Step 3: Cross multiply
   89,157.60x = 123,120.72 × 57,381.84
4. Step 4: Simplify right side
   89,157.60x = 7,064,893,455.72
5. Step 5: Solve for x
   x = 7,064,893,455.72/89,157.60
6. Step 6: Final answer
   x = 79,240.51