Finding the Fourth Proportional to 136,510.72, 188,385.72 and 76,085.25

Step by Step Solution

1. Step 1: Write the proportion equation
   136,510.72 : 188,385.72 = 76,085.25 : x
2. Step 2: Convert to fraction form
   136,510.72/188,385.72 = 76,085.25/x
3. Step 3: Cross multiply
   136,510.72x = 188,385.72 × 76,085.25
4. Step 4: Simplify right side
   136,510.72x = 14,333,374,602.63
5. Step 5: Solve for x
   x = 14,333,374,602.63/136,510.72
6. Step 6: Final answer
   x = 104,998.16