Finding the Fourth Proportional to 99,705, 137,588.04 and 59,417.84

Step by Step Solution

1. Step 1: Write the proportion equation
   99,705 : 137,588.04 = 59,417.84 : x
2. Step 2: Convert to fraction form
   99,705/137,588.04 = 59,417.84/x
3. Step 3: Cross multiply
   99,705x = 137,588.04 × 59,417.84
4. Step 4: Simplify right side
   99,705x = 8,175,184,146.63
5. Step 5: Solve for x
   x = 8,175,184,146.63/99,705
6. Step 6: Final answer
   x = 81,993.72