Finding the Fourth Proportional to 90,106.16, 135,075.60 and 42,743.46

Step by Step Solution

1. Step 1: Write the proportion equation
   90,106.16 : 135,075.60 = 42,743.46 : x
2. Step 2: Convert to fraction form
   90,106.16/135,075.60 = 42,743.46/x
3. Step 3: Cross multiply
   90,106.16x = 135,075.60 × 42,743.46
4. Step 4: Simplify right side
   90,106.16x = 5,773,599,012.11
5. Step 5: Solve for x
   x = 5,773,599,012.11/90,106.16
6. Step 6: Final answer
   x = 64,075.52