Finding the Fourth Proportional to 56,860.55, 78,417.71 and 45,525.91

Step by Step Solution

1. Step 1: Write the proportion equation
   56,860.55 : 78,417.71 = 45,525.91 : x
2. Step 2: Convert to fraction form
   56,860.55/78,417.71 = 45,525.91/x
3. Step 3: Cross multiply
   56,860.55x = 78,417.71 × 45,525.91
4. Step 4: Simplify right side
   56,860.55x = 3,570,037,548.20
5. Step 5: Solve for x
   x = 3,570,037,548.20/56,860.55
6. Step 6: Final answer
   x = 62,785.84