Finding the Fourth Proportional to 28,256,810.88, 42,323,420.56 and 20,034,529.84

Step by Step Solution

1. Step 1: Write the proportion equation
   28,256,810.88 : 42,323,420.56 = 20,034,529.84 : x
2. Step 2: Convert to fraction form
   28,256,810.88/42,323,420.56 = 20,034,529.84/x
3. Step 3: Cross multiply
   28,256,810.88x = 42,323,420.56 × 20,034,529.84
4. Step 4: Simplify right side
   28,256,810.88x = 847,929,832,140,189.50
5. Step 5: Solve for x
   x = 847,929,832,140,189.50/28,256,810.88
6. Step 6: Final answer
   x = 30,007,980.58