Finding the Fourth Proportional to 191,642.18, 287,505.35 and 56,695.69

Step by Step Solution

1. Step 1: Write the proportion equation
   191,642.18 : 287,505.35 = 56,695.69 : x
2. Step 2: Convert to fraction form
   191,642.18/287,505.35 = 56,695.69/x
3. Step 3: Cross multiply
   191,642.18x = 287,505.35 × 56,695.69
4. Step 4: Simplify right side
   191,642.18x = 16,300,314,196.94
5. Step 5: Solve for x
   x = 16,300,314,196.94/191,642.18
6. Step 6: Final answer
   x = 85,055.98