Finding the Fourth Proportional to 99,788, 137,707.62 and 55,076

Step by Step Solution

1. Step 1: Write the proportion equation
   99,788 : 137,707.62 = 55,076 : x
2. Step 2: Convert to fraction form
   99,788/137,707.62 = 55,076/x
3. Step 3: Cross multiply
   99,788x = 137,707.62 × 55,076
4. Step 4: Simplify right side
   99,788x = 7,584,384,879.12
5. Step 5: Solve for x
   x = 7,584,384,879.12/99,788
6. Step 6: Final answer
   x = 76,004.98