Finding the Fourth Proportional to 99,773.32, 137,686.90 and 55,061

Step by Step Solution

1. Step 1: Write the proportion equation
   99,773.32 : 137,686.90 = 55,061 : x
2. Step 2: Convert to fraction form
   99,773.32/137,686.90 = 55,061/x
3. Step 3: Cross multiply
   99,773.32x = 137,686.90 × 55,061
4. Step 4: Simplify right side
   99,773.32x = 7,581,178,400.90
5. Step 5: Solve for x
   x = 7,581,178,400.90/99,773.32
6. Step 6: Final answer
   x = 75,984.02