Finding the Fourth Proportional to 99,787.50, 137,706.93 and 55,075.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,787.50 : 137,706.93 = 55,075.50 : x
2. Step 2: Convert to fraction form
   99,787.50/137,706.93 = 55,075.50/x
3. Step 3: Cross multiply
   99,787.50x = 137,706.93 × 55,075.50
4. Step 4: Simplify right side
   99,787.50x = 7,584,278,023.22
5. Step 5: Solve for x
   x = 7,584,278,023.22/99,787.50
6. Step 6: Final answer
   x = 76,004.29