Finding the Fourth Proportional to 61,419.40, 91,495.20 and 59,560.88

Step by Step Solution

1. Step 1: Write the proportion equation
   61,419.40 : 91,495.20 = 59,560.88 : x
2. Step 2: Convert to fraction form
   61,419.40/91,495.20 = 59,560.88/x
3. Step 3: Cross multiply
   61,419.40x = 91,495.20 × 59,560.88
4. Step 4: Simplify right side
   61,419.40x = 5,449,534,627.78
5. Step 5: Solve for x
   x = 5,449,534,627.78/61,419.40
6. Step 6: Final answer
   x = 88,726.60