Finding the Fourth Proportional to 942,090.39, 1,300,094.15 and 512,379.99

Step by Step Solution

1. Step 1: Write the proportion equation
   942,090.39 : 1,300,094.15 = 512,379.99 : x
2. Step 2: Convert to fraction form
   942,090.39/1,300,094.15 = 512,379.99/x
3. Step 3: Cross multiply
   942,090.39x = 1,300,094.15 × 512,379.99
4. Step 4: Simplify right side
   942,090.39x = 666,142,225,014.16
5. Step 5: Solve for x
   x = 666,142,225,014.16/942,090.39
6. Step 6: Final answer
   x = 707,089.50