Finding the Fourth Proportional to 99,761, 137,673.06 and 55,051.88

Step by Step Solution

1. Step 1: Write the proportion equation
   99,761 : 137,673.06 = 55,051.88 : x
2. Step 2: Convert to fraction form
   99,761/137,673.06 = 55,051.88/x
3. Step 3: Cross multiply
   99,761x = 137,673.06 × 55,051.88
4. Step 4: Simplify right side
   99,761x = 7,579,160,778.35
5. Step 5: Solve for x
   x = 7,579,160,778.35/99,761
6. Step 6: Final answer
   x = 75,973.18