Finding the Fourth Proportional to 99,875.86, 137,828.52 and 54,553.84

Step by Step Solution

1. Step 1: Write the proportion equation
   99,875.86 : 137,828.52 = 54,553.84 : x
2. Step 2: Convert to fraction form
   99,875.86/137,828.52 = 54,553.84/x
3. Step 3: Cross multiply
   99,875.86x = 137,828.52 × 54,553.84
4. Step 4: Simplify right side
   99,875.86x = 7,519,074,682.95
5. Step 5: Solve for x
   x = 7,519,074,682.95/99,875.86
6. Step 6: Final answer
   x = 75,284.21