Finding the Fourth Proportional to 99,027.34, 136,644.59 and 56,012.69

Step by Step Solution

1. Step 1: Write the proportion equation
   99,027.34 : 136,644.59 = 56,012.69 : x
2. Step 2: Convert to fraction form
   99,027.34/136,644.59 = 56,012.69/x
3. Step 3: Cross multiply
   99,027.34x = 136,644.59 × 56,012.69
4. Step 4: Simplify right side
   99,027.34x = 7,653,831,541.49
5. Step 5: Solve for x
   x = 7,653,831,541.49/99,027.34
6. Step 6: Final answer
   x = 77,290.09