Finding the Fourth Proportional to 99,148.15, 136,773.77 and 63,300.49

Step by Step Solution

1. Step 1: Write the proportion equation
   99,148.15 : 136,773.77 = 63,300.49 : x
2. Step 2: Convert to fraction form
   99,148.15/136,773.77 = 63,300.49/x
3. Step 3: Cross multiply
   99,148.15x = 136,773.77 × 63,300.49
4. Step 4: Simplify right side
   99,148.15x = 8,657,846,001.71
5. Step 5: Solve for x
   x = 8,657,846,001.71/99,148.15
6. Step 6: Final answer
   x = 87,322.31