Finding the Fourth Proportional to 99,444.85, 137,199.25 and 56,419.27

Step by Step Solution

1. Step 1: Write the proportion equation
   99,444.85 : 137,199.25 = 56,419.27 : x
2. Step 2: Convert to fraction form
   99,444.85/137,199.25 = 56,419.27/x
3. Step 3: Cross multiply
   99,444.85x = 137,199.25 × 56,419.27
4. Step 4: Simplify right side
   99,444.85x = 7,740,681,045.50
5. Step 5: Solve for x
   x = 7,740,681,045.50/99,444.85
6. Step 6: Final answer
   x = 77,838.94