Finding the Fourth Proportional to 99,008.42, 136,587.35 and 58,723.88

Step by Step Solution

1. Step 1: Write the proportion equation
   99,008.42 : 136,587.35 = 58,723.88 : x
2. Step 2: Convert to fraction form
   99,008.42/136,587.35 = 58,723.88/x
3. Step 3: Cross multiply
   99,008.42x = 136,587.35 × 58,723.88
4. Step 4: Simplify right side
   99,008.42x = 8,020,938,857.30
5. Step 5: Solve for x
   x = 8,020,938,857.30/99,008.42
6. Step 6: Final answer
   x = 81,012.69