Finding the Fourth Proportional to 42,128,814.90, 59,059,967.10 and 42,128,814.90

Step by Step Solution

1. Step 1: Write the proportion equation
   42,128,814.90 : 59,059,967.10 = 42,128,814.90 : x
2. Step 2: Convert to fraction form
   42,128,814.90/59,059,967.10 = 42,128,814.90/x
3. Step 3: Cross multiply
   42,128,814.90x = 59,059,967.10 × 42,128,814.90
4. Step 4: Simplify right side
   42,128,814.90x = 2,488,126,421,955,990
5. Step 5: Solve for x
   x = 2,488,126,421,955,990/42,128,814.90
6. Step 6: Final answer
   x = 59,059,967.10