Finding the Fourth Proportional to 99,118.69, 136,721.57 and 58,803.91

Step by Step Solution

1. Step 1: Write the proportion equation
   99,118.69 : 136,721.57 = 58,803.91 : x
2. Step 2: Convert to fraction form
   99,118.69/136,721.57 = 58,803.91/x
3. Step 3: Cross multiply
   99,118.69x = 136,721.57 × 58,803.91
4. Step 4: Simplify right side
   99,118.69x = 8,039,762,897.34
5. Step 5: Solve for x
   x = 8,039,762,897.34/99,118.69
6. Step 6: Final answer
   x = 81,112.48