Finding the Fourth Proportional to 113,300.54, 156,355.79 and 61,618.12

Step by Step Solution

1. Step 1: Write the proportion equation
   113,300.54 : 156,355.79 = 61,618.12 : x
2. Step 2: Convert to fraction form
   113,300.54/156,355.79 = 61,618.12/x
3. Step 3: Cross multiply
   113,300.54x = 156,355.79 × 61,618.12
4. Step 4: Simplify right side
   113,300.54x = 9,634,349,131.93
5. Step 5: Solve for x
   x = 9,634,349,131.93/113,300.54
6. Step 6: Final answer
   x = 85,033.57