Finding the Fourth Proportional to 65,820,573.63, 90,788,655.30 and 42,328,810.74

Step by Step Solution

1. Step 1: Write the proportion equation
   65,820,573.63 : 90,788,655.30 = 42,328,810.74 : x
2. Step 2: Convert to fraction form
   65,820,573.63/90,788,655.30 = 42,328,810.74/x
3. Step 3: Cross multiply
   65,820,573.63x = 90,788,655.30 × 42,328,810.74
4. Step 4: Simplify right side
   65,820,573.63x = 3,842,975,807,532,798
5. Step 5: Solve for x
   x = 3,842,975,807,532,798/65,820,573.63
6. Step 6: Final answer
   x = 58,385,632.27