Finding the Fourth Proportional to 99.35, 149.00 and 56.00

Step by Step Solution

1. Step 1: Write the proportion equation
   99.35 : 149.00 = 56.00 : x
2. Step 2: Convert to fraction form
   99.35/149.00 = 56.00/x
3. Step 3: Cross multiply
   99.35x = 149.00 × 56.00
4. Step 4: Simplify right side
   99.35x = 8,342.98
5. Step 5: Solve for x
   x = 8,342.98/99.35
6. Step 6: Final answer
   x = 83.98