Finding the Fourth Proportional to 101,813.90, 152,499.41 and 68,385.60

Step by Step Solution

1. Step 1: Write the proportion equation
   101,813.90 : 152,499.41 = 68,385.60 : x
2. Step 2: Convert to fraction form
   101,813.90/152,499.41 = 68,385.60/x
3. Step 3: Cross multiply
   101,813.90x = 152,499.41 × 68,385.60
4. Step 4: Simplify right side
   101,813.90x = 10,428,763,567.01
5. Step 5: Solve for x
   x = 10,428,763,567.01/101,813.90
6. Step 6: Final answer
   x = 102,429.67