Finding the Fourth Proportional to 99,887.02, 137,838.56 and 54,555.98

Step by Step Solution

1. Step 1: Write the proportion equation
   99,887.02 : 137,838.56 = 54,555.98 : x
2. Step 2: Convert to fraction form
   99,887.02/137,838.56 = 54,555.98/x
3. Step 3: Cross multiply
   99,887.02x = 137,838.56 × 54,555.98
4. Step 4: Simplify right side
   99,887.02x = 7,519,917,842.84
5. Step 5: Solve for x
   x = 7,519,917,842.84/99,887.02
6. Step 6: Final answer
   x = 75,284.23